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The Length of the Photoperiodically Effective Twilight Period

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/3223

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Title: The Length of the Photoperiodically Effective Twilight Period
Creators: Greulach, Victor A.
Issue Date: 1942-03
Citation: The Ohio Journal of Science. v42 n2 (March, 1942), 71-72
URI: http://hdl.handle.net/1811/3223
ISSN: 0030-0950
Rights: Reproduction of articles for non-commercial educational or research use granted without request if credit to The Ohio State University and The Ohio Academy of Science is given.
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