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2010, ISBN 0199775443
This book examines the role of photoperiod (day length) in timing seasonal adaptations in plants, invertebrates, and vertebrates. Current literature is... 
Photoperiodism
Web Resource
2010
This book examines the role of photoperiod (day length) in timing seasonal adaptations in plants, invertebrates, and vertebrates. Current literature is... 
Photoperiodism
Web Resource
2014, ISBN 9781446247112
Reference
Bibliography of reproduction, Volume 38 (1), 87-91.
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1959, American Association for the Advancement of Science. Publication no. 55, xvii, 903 p. illus., diagrs.
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1954, Technical report / British Electrical and Allied Industries Research Association, Volume W/T 31., 28
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Institute of biology's Studies in biology no. 25, 62, [2] p. illus., map.
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Seminar series / Society for Experimental Biology, Volume 14, xvii, 197
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Cold Spring Harbor symposia on quantitative biology, Volume 25., 525p. : ill.
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1975, Benjamin modular program in biology., ISBN 0805314652, 122
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10/2009
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