Ricker, W. E. (1968). Methods for Assessment of fish production in fresh waters. International Biological Programme.
Chicago-viite (17. p.)Ricker, W. E. Methods for Assessment of Fish Production in Fresh Waters. Londres: International Biological Programme, 1968.
MLA-viite (9. p.)Ricker, W. E. Methods for Assessment of Fish Production in Fresh Waters. International Biological Programme, 1968.
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