Daguerreotype 发表于 2025-3-21 19:29:48

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审问 发表于 2025-3-22 00:13:34

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幼稚 发表于 2025-3-22 03:21:48

Introduction,This book is intended to help all who are interested in freshwater animal life to identify the animals which they find, and to discover more about their ways of living. I hope that it will be useful to people of school age as well as to more serious students of Natural History.

Inclement 发表于 2025-3-22 06:55:43

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不整齐 发表于 2025-3-22 08:55:57

https://doi.org/10.1007/978-94-009-5849-4evolution; invertebrates; physiology; Model invertebrates

candle 发表于 2025-3-22 14:48:08

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受辱 发表于 2025-3-22 20:53:07

Heinrich Walter,Siegmar-W. Breckleon, a fold of the body wall (mantle) outside which is usually a hard external shell. Inside this the whole animal can be withdrawn. Most of the fresh-water forms are reasonably large so that their habits can be studied in a laboratory or classroom without the aid of a microscope; many species live well in an aquarium.

bromide 发表于 2025-3-22 21:44:02

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BET 发表于 2025-3-23 02:17:53

The Mollusca,on, a fold of the body wall (mantle) outside which is usually a hard external shell. Inside this the whole animal can be withdrawn. Most of the fresh-water forms are reasonably large so that their habits can be studied in a laboratory or classroom without the aid of a microscope; many species live well in an aquarium.

杂役 发表于 2025-3-23 08:28:15

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查看完整版本: Titlebook: Animal Life in Fresh Water; A Guide to Fresh-Wat Helen Mellanby Book 1963 Helen Mellanby 1963 evolution.invertebrates.physiology.Model inve