Methods for assessment of fish production in fresh waters/2nd ed.
Ricker, W E
Methods for assessment of fish production in fresh waters/2nd ed. - 2nd ed. - Edinburgh Oxford 1971 - IBP handbook 3 .
Fresh water fisheries
639.21 / L1
Methods for assessment of fish production in fresh waters/2nd ed. - 2nd ed. - Edinburgh Oxford 1971 - IBP handbook 3 .
Fresh water fisheries
639.21 / L1