273 | IV A 1 | 1965 | 22 |
| Bauer, F. – Mníchov. [ 1 fol. ] | |
274 | IV A 1 | 1956 | 22 |
| Bezdíček, V. – Brno. [ 2 fol. ] | |
275 | IV A 1 | 1970 | 22 |
| Binder, R. – Zvolen. [ 2 fol. ] | |
276 | IV A 1 | 1969 | 22 |
| Blatný, C. – Praha. [ 1 fol. ] | |
277 | IV A 1 | 1971 | 22 |
| Bodárdi, J. – Budapešť. [ 1 fol. ] | |
278 | IV A 1 | 1964 | 22 |
| Bohuň. [ 1 fol. ] | |
279 | IV A 1 | 1956–1957 | 22 |
| Bratránek, A. – Praha. [ 2 fol. ] | |
280 | IV A 1 | 1962 | 22 |
| Bundesverwaltungsgericht – Berlín. [ 1 fol. ] | |
281 | IV A 1 | 1958 | 22 |
| Čebotarjev, A. I. – Leningrad. [ 2 fol. ] | |
282 | IV A 1 | 1956 | 22 |
| Česká matica technická – Praha. [ 1 fol. ] | |
283 | IV A 1 | 1977 | 22 |
| Daubner, I. – Praha. [ 1 fol. ] | |
284 | IV A 1 | 1957 | 22 |
| Debaki, K. – Varšava. [ 1 fol. ] | |
285 | IV A 1 | 1960 | 22 |
| Dekan Fakulty technológie palív – Praha. [ 2 fol. ] | |
286 | IV A 1 | 1956 | 22 |
| Dohnálek, R. – Praha. [ 3 fol. ] | |
287 | IV A 1 | 1958 | 22 |
| Donaukraftwerke Jochenstein A. G. – Schärdin. [ 1 fol. ] | |
288 | IV A 1 | 1968 | 22 |
| Duba, D. – Kabul. [ 2 fol. ] | |
289 | IV A 1 | 1954 | 22 |
| Ďuriš, J. – Praha. [ 1 fol. ] | |
290 | IV A 1 | 1963 | 22 |
| Eidg. Amt für Wasserwirtschaft – Bern. [ 1 fol. ] | |
291 | IV A 1 | 1971 | 22 |
| Ferko, Vl. – Bratislava. [ 1 fol. ] | |
292 | IV A 1 | 1958–1960 | 22 |
| Friedrich, W. – Koblenc. [ 15 fol. ] | |
293 | IV A 1 | 1974 | 22 |
| Ginzburg, V. M. – Moskva. [ 5 fol. ] | |
294 | IV A 1 | 1958 | 22 |
| Grengg – Graz. [ 1 fol. ] | |
295 | IV A 1 | 1958 | 22 |
| Grzywienski, A. – Viedeň. [ 1 fol. ] | |
296 | IV A 1 | 1963 | 22 |
| Gygax – Bern. [ 1 fol. ] | |
297 | IV A 1 | 1962 | 22 |
| Hamburger Wasserwerke – Hamburg. [ 1 fol. ] | |
298 | IV A 1 | 1953 | 22 |
| Heisig, V. – Praha. [ 1 fol., 2x ] | |
299 | IV A 1 | 1975–1976 | 22 |
| Hep, L. – Ostrava. [ 3 fol. ] | |
300 | IV A 1 | 1949 | 22 |
| Hydrológiai közlöny – Budapešť. [ 2 fol. ] | |
301 | IV A 1 | 1957–1960 | 22 |
| Hnidka, P. – Čadca. [ 5 fol. ] | |
302 | IV A 1 | 1962 | 22 |
| Hohendorf, E. – Bydgoszcz. [ 2 fol. ] | |
303 | IV A 1 | | 22 |
| Horst, A. – Berlín. [ 1 fol. ] | |
304 | IV A 1 | 1956 | 22 |
| Chudzynski, M. – Varšava. [ 2 fol. ] | |
305 | IV A 1 | 1956 | 22 |
| Ihrig, D. – Budapešť. [ 2 fol. ] | |
306 | IV A 1 | 1958–1961 | 22 |
| Institut für Wasserwirtshaft – Berlín. [ 2 fol. ] | |
307 | IV A 1 | 1961 | 22 |
| Institut Geografie Poľskej akadémie vied – Krakow. [ 2 fol. ] | |
308 | IV A 1 | 1963 | 22 |
| Institu Suisse de Météorologie – Zürich. [ 1 fol. ] | |
309 | IV A 1 | 1958–1959 | 22 |
| Jančák, Ľ. – Ilava. [ 6 fol. ] | |
310 | IV A 1 | 1960–1962 | 22 |
| Jemelka, J. – Praha. [ 2 fol. ] | |
311 | IV A 1 | | 22 |
| Ježdík, T. – Praha. [ 1 fol. ] | |
312 | IV A 1 | 1953 | 22 |
| Jiroušek, J. M. – Praha. [ 2 fol. ] | |
313 | IV A 1 | 1954 | 22 |
| Kacsmarek, Z. – Varšava. [ 1 fol. ] | |
314 | IV A 1 | 1963 | 22 |
| Kammer der Technik – Berlín. [ 1 fol. ] | |
315 | IV A 1 | 1958 | 22 |
| Katedra zemepisu na Prírodovedeckej fakulte Masarykovej univerzity – Brno. [ 1 fol. ] | |
316 | IV A 1 | 1960 | 22 |
| Kekelidze, S. – Tbilisi. [ 4 fol. ] | |
317 | IV A 1 | 1968 | 22 |
| Klemeš, V. – Toronto. [ 1 fol. ] | |
318 | IV A 1 | 1962 | 22 |
| Knie, K. – Viedeň. [ 1 fol. ] | |
319 | IV A 1 | 1957 | 22 |
| Kniška, J. – Bratislava. | |
320 | IV A 1 | 1968 | 22 |
| Komárek, J. – Pardubice. [ 1 fol. ] | |
321 | IV A 1 | 1956 | 22 |
| Krajská odborová rada, Kultúrno-sociálne oddelenie – Bratislava. [ 1 fol. ] | |
322 | IV A 1 | 1960 | 22 |
| Kratochvíl, St. – Brno. [ 1 fol. ] | |
323 | IV A 1 | 1958 | 22 |
| Krejčí, J. – Brno. [ 1 fol. ] | |
324 | IV A 1 | 1956–1958 | 22 |
| Kresser, W. – Viedeň. [ 7 fol. ] | |
325 | IV A 1 | 1957–1960 | 22 |
| Kripner, J. – Praha. [ 2 fol. ] | |
326 | IV A 1 | 1960 | 22 |
| Kubica, J. – Varšava. [ 2 fol. ] | |
327 | IV A 1 | 1960 | 22 |
| Kuratorium für Kulturbauwesen – Hannover. [ 1 fol. ] | |
328 | IV A 1 | 1956 | 22 |
| Lambor, J. – Varšava. [ 2 fol. ] | |
329 | IV A 1 | 1950 | 22 |
| Láng, S. – Budapešť. [ 1 fol. ] | |
330 | IV A 1 | 1949 | 22 |
| Lászloffy, W. – Budapešť. [ 2 fol. ] | |
331 | IV A 1 | 1954 | 22 |
| Lorenz, J. – Praha. [ 1 fol. ] | |
332 | IV A 1 | 1963 | 22 |
| Lugeon, J. – Zürich. [ 1 fol. ] | |
333 | IV A 1 | 1957 | 22 |
| Menkel, M. F. – Moskva. [ 1 fol. ] | |
334 | IV A 1 | 1970 | 22 |
| Michajlov, A. N. – Leningrad. [ 1 fol. ] | |
335 | IV A 1 | 1954 | 22 |
| Mikulski, Z. – Podkova Lésna. [ 1 fol. ] | |
336 | IV A 1 | 1957–1968 | 22 |
| Miljukov, P. J. – Moskva. [ 7 fol. ] | |
337 | IV A 1 | 1957 | 22 |
| Österreichische Nationalkomitet der Weltkaftkonferenz – Viedeň. [ 2 fol. ] | |
338 | IV A 1 | 1976 | 22 |
| Pacl, J. – Bratislava. [ 1 fol. ] | |
339 | IV A 1 | 1962 | 22 |
| Pardé, M. – Grenoble. [ 1 fol. ] | |
340 | IV A 1 | 1960–1962 | 22 |
| Paul, H. – Hamburg. [ 4 fol. ] | |
341 | IV A 1 | 1966 | 22 |
| Petrovič, Št. [ 1 fol. ] | |
342 | IV A 1 | 1954 | 23 |
| Pompe, F. – Praha. [ 1 fol. ] | |
343 | IV A 1 | | 23 |
| Praha – Moskva, mesačník – Praha. [ 1 fol. ] | |
344 | IV A 1 | 1956 | 23 |
| Predsedníctvo SAV – Bratislava. [ 1 fol. ] | |
345 | IV A 1 | 1962 | 23 |
| Prochal, P. – Krakov. [ 1 fol. ] | |
346 | IV A 1 | 1960 | 23 |
| Pýcha, M. – Praha. [ 1 fol. ] | |
347 | IV A 1 | 1950 | 23 |
| ROH – Ústredie rekreačných stredísk na Slovensku – Bratislava. [ 2 fol. ] | |
348 | IV A 1 | | 23 |
| Rohan, K. – Quebec. [ 2 fol. ] | |
349 | IV A 1 | 1949 | 23 |
| Rosenauer, F. – Linz – Donau. [ 2 fol. ] | |
350 | IV A 1 | 1962 | 23 |
| Ržanicyn, N. – Moskva. [ 1 fol. ] | |
351 | IV A 1 | 1963 | 23 |
| Schnitter, G. – Zürich. [ 2 fol. ] | |
352 | IV A 1 | 1965 | 23 |
| Simmler, H. – Graz. [ 1 fol. ] | |
353 | IV A 1 | 1956 | 23 |
| Slovenské vydavateľstvo technickej literatúry – Bratislava. [ 1 fol. ] | |
354 | IV A 1 | 1958 | 23 |
| Slovenský výbor obrancov mieru – Bratislava. [ 3 fol. ] | |
355 | IV A 1 | 1954 | 23 |
| Smolík, L. – Praha. [ 1 fol. ] | |
356 | IV A 1 | 1962 | 23 |
| Sochoň, Z. – Varšava. [ 1 fol. ] | |
357 | IV A 1 | 1956–1959 | 23 |
| Sokolovskij, D. L. – Leningrad. [ 2 fol. ] | |
358 | IV A 1 | 1955–1956 | 23 |
| Správa vodného hospodárstva na Slovensku – Bratislava. [ 2 fol. ] | |
359 | IV A 1 | 1961 | 23 |
| Szabó, P. Z. – Pécs. [ 1 fol. ] | |
360 | IV A 1 | 1977 | 23 |
| Šinták, J. – Chomutov. [ 3 fol. ] | |
361 | IV A 1 | 1956 | 23 |
| Šrámek-Hušek, E. – Třeboň. [ 1 fol. ] | |
362 | IV A 1 | 1978 | 23 |
| Štoll, Č. – Praha. [ 2 fol. ] | |
363 | IV A 1 | 1954 | 23 |
| Tadensz, J. – Lodž. [ 1 fol. ] | |
364 | IV A 1 | 1978 | 23 |
| Tesařík, I. – Brno. [ 1 fol. ] | |
365 | IV A 1 | | 23 |
| Trebert, H. – Varšava. [ 1 fol. ] | |
366 | IV A 1 | 1958–1960 | 23 |
| Trebichavský, F. – Praha. [ 2 fol. ] | |
367 | IV A 1 | 1960–1963 | 23 |
| Ujvári, J. – Kluž. [ 3 fol. ] | |
368 | IV A 1 | 1966 | 23 |
| Ukrajinskij n.i. Gidrometeorologičeskij institut – Kijev. [ 2 fol. ] | |
369 | IV A 1 | 1959, 1968 | 23 |
| Uryvajev, B. A. – Leningrad. [ 1 fol. ] | |
370 | IV A 1 | 1974 | 23 |
| Veľký, J. – Bratislava. [ 1 fol. ] | |
371 | IV A 1 | 1968 | 23 |
| Vrbovský – Banská Bystrica. [ 2 fol. ] | |
372 | IV A 1 | 1959 | 23 |
| Wertz, G. – Rostock. [ 2 fol. ] | |
373 | IV A 1 | 1961 | 23 |
| Zimmermann, F. – Braunschweig. [ 2 fol. ] | |
374 | IV A 1 | 1962 | 23 |
| Žbirka, Š. – Bratislava. [ 1 fol. ] | |
375 | IV A 1 | 1959 | 23 |
| Ždímal, B. – Praha. [ 2 fol. ] | |
376 | IV A 1 | 1956–1968 | 23 |
| Korešpondencia neurčená. [ 16 fol. ] | |