George J & Stakma E C, H. (1957). Principles of plant pathology. Ronald press co.
Chicago Edition CitationGeorge J and Harrar Stakma E C. Principles of Plant Pathology. Newyork: Ronald press co, 1957.
Deismireacht MLAGeorge J and Harrar Stakma E C. Principles of Plant Pathology. Ronald press co, 1957.
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