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SignatúraČasový rozsahškatuľa
Popis IJ

581IIA1196828
American Society of Ichtyologists and Herpetologists – člen.
582IIA11969–198528
European Ichtyological Union – člen.
583IIA11982–199028
European Inland Fisheries Advisory Commision (EIFAC pri FAO) – člen working group on Introductions.
584IIA1199229
East European Enviromental Research (ISTER) – člen ?
585IIA11968–199729
Food and Agriculture Organization of the United Nations – rybársky konzultant.
586IIA11970–199930
National Geographic Society, USA – člen.
586aIIA1199730
New York Academy of Sciences – člen.
587IIA1199930
Ramsar Convencion (UNESCO) – expert.
588IIA11990–199730
Scientific Committee on Problems of the Enviroment –Slovenský národný komitét – člen.
589IIA11992–200230
Societas Internationalis Limnologiae (SIL) – člen; Societas Internationalis Limnologiae Theoreticae et Aplicatae (SIL–IVL)
590IIA11974–199330
Man and the Biosphere (MAB UNESCO)