Improvements in the control of ribes by chemical and mechanical methods / by H.R. Offord ... [et al.].

Title:	Improvements in the control of ribes by chemical and mechanical methods / by H.R. Offord ... [et al.].
Note:	Washington, D.C. : U.S. Dept. of Agriculture, 1952

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Subject:	Blister rust -- Control
Subject:	White pine -- Diseases and pests -- Control
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