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The Expressed Sap of Corn Plants as an Indicator of Nutrient Needs


Author:
Pettinger, N.A.
Source:
USDA
Year:
1931
Format:
p. 95-119. plates.
Language:
English
Collection:
USDA publications
Permanent URL:
http://handle.nal.usda.gov/10113/IND43967981