(1972). Appraisal of fishing waters and their fish populations. Food and Agriculture Organisation: Rome. 50 pp., meer
(1972). Report on the first meeting of the eifac working party on economic and technical appraisal of different types of fish culture. Food and Agriculture Organisation: Rome. , meer
(1973). Report of the seventh session of the european inland fisheries advisory commission. Food and Agriculture Organisation: Rome. 76 pp., meer
Berka, R. (1972). A review of feeding equipment in fish culture. Food and Agriculture Organisation: Rome. 32 pp., meer
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