Cook, J. A. (1951). A study of some factors affecting the absorption of urea by McIntosh apple leaves.
Chicago-referens (17:e uppl.)Cook, James Arthur. A Study of Some Factors Affecting the Absorption of Urea by McIntosh Apple Leaves. [Ithaca, N. Y.], 1951.
MLA-referens (8:e uppl.)Cook, James Arthur. A Study of Some Factors Affecting the Absorption of Urea by McIntosh Apple Leaves. 1951.
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