551.48
NEE/G     Needham, James G

               A Guide to the study of fresh-water biology / James G. Needhan & Paul R. Needham . - 5th ed. rev & enl. . - New York : Mc Graw- Hill,1962c . - x,108p.;fig.

               includes bibliographical reference & glossary

               70461376

Central Inland Fisheries Research Institute

CIFRI