This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1920 Excerpt: ...lakes, ponds, and reservoirs contains more Protozoa than either rain water or ground water, and standing water is, as a rule, more crowded with them than running water. The organisms that float passively in the water without seeking the shore or bottom constitute a group known as plankton. An examination of the waters ...

Practical Zoology 2016, Palala Press

ISBN-13: 9781354318867

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Practical Zoology 2016, Palala Press

ISBN-13: 9781354429129

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Practical Zoology 2015, Andesite Press

ISBN-13: 9781297558108

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Practical Zoology 2015, Palala Press

ISBN-13: 9781341782688

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Practical Zoology 2012, Hardpress Publishing, Ann Arbor MI

ISBN-13: 9781290348812

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Practical Zoology 2010, Nabu Press, Charleston SC

ISBN-13: 9781144125781

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Practical Zoology 2008, Bushnell Press, Alcester

ISBN-13: 9781408691816

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