Statistical methods : by C.B. Davenport Davenport, Charles Benedict, 1866-1944 creator text book New York J. Wiley 1914 1914 3d rev. ed.
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ENG Biology Biometry Laboratory manuals Variation (Biology) QH405 .D25 1914 https://www.biodiversitylibrary.org/bibliography/23465 10.5962/bhl.title.23465 ORC