A Study of the Pollution and Natural Purification of the Ohio River. I. The Plankton and Related Organisms.

Purdy, W. C.

Published by U. S. Public Health Service Public Health Bulletin No. 131, 1922 ( 1923), 78 Pp., 1923
Condition: Used - Very good Soft cover

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Used - Soft cover

Condition: Used - Very good

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