Gerking, S. D. Biological basis of Fresh- Water fish-production: A symposium sporsred by sectional committee on productivity...the University, reading , England1-6sept. 1966.
Chicago-viite (17. p.)Gerking, Shelby D. Biological Basis of Fresh- Water Fish-production: A Symposium Sporsred by Sectional Committee on Productivity...the University, Reading , England1-6sept. 1966.
MLA-viite (9. p.)Gerking, Shelby D. Biological Basis of Fresh- Water Fish-production: A Symposium Sporsred by Sectional Committee on Productivity...the University, Reading , England1-6sept. 1966.
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