Search Constraints
You searched for:
Creator Personal Names
Pierre, W. H. (William Henry), 1898-
Remove constraint Creator Personal Names: Pierre, W. H. (William Henry), 1898-
Creator Personal Names
Pohlman, G. G. (George Gordon), 1902-
Remove constraint Creator Personal Names: Pohlman, G. G. (George Gordon), 1902-
All Subjects
Phosphorus in agriculture.
Remove constraint All Subjects: Phosphorus in agriculture.
Subject Topical
Sap.
Remove constraint Subject Topical: Sap.
Subject Topical
Soils--Phosphorus content.
Remove constraint Subject Topical: Soils--Phosphorus content.
1 entry found