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Photoperiodism and related phenomena in plants and animals : proceedings of the conference on photoperiodism, October 29-November 2 ... / edited by Robert B. Withrow, with the cooperation of Arthur C. Giese [and others].

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Photoperiodism and related phenomena in plants and animals : proceedings of the conference on photoperiodism, October 29-November 2 ... / edited by Robert B. Withrow, with the cooperation of Arthur C. Giese [and others].