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You searched for: Subject Topical Nitrogen. Remove constraint Subject Topical: Nitrogen. Subject Topical Potassium. Remove constraint Subject Topical: Potassium.
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1. Some things the experiment stations have found out about phosphorus, nitrogen, potassium, and the use of commercial fertilizers.

Creator Personal:
Dustman, Robert B. (Robert Barclay), 1892-
Title:
Some things the experiment stations have found out about phosphorus, nitrogen, potassium, and the use of commercial fertilizers.
Call Number:
P19005
Date:
1918
Description:

Serial issue. Issued as: West Virginia University. College of Agriculture. Extension Department. Agricultural summary, no. 7 (1918:June).

Subject Topical:
Fertilizers., Phosphorus., Potassium., Nitrogen.
All:
Fertilizers., Phosphorus., Potassium., Nitrogen.