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p h howell
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Exercises in Plant Biology
H. DeLano Black, Martha P. Brown, G. Leon Howell · Hunter Books
214 sayfa · 1991
Life Sciences - Botany / Study & Teaching / Science
Laboratory afficacy of 3-trifluoromethyl-4-nitrophenol (TFM) as a lampricide
John H. Howell, George W. Piavis, Verdel K. Dawson, Kenneth B. Cumming, Joe B. Sills, J. L. Allen, P. A. Gilderhus · U.S. Dept. of the Interior, Fish and Wildlife Service
13 sayfa · 1975
Piscicides / Sea lamprey / Fishes / Control / Petromyzon marinus