"Preliminary studies of the exuded plant sap and the relation between the composition of the sap and the soil solution."; "Pohlman, G. G. (George Gordon), 1902-", "Pierre, W. H. (William Henry), 1898-"; "Soils--Composition.", "Sap."; "Pohlman, G. G. (George Gordon), 1902-", "Pierre, W. H. (William Henry), 1898-"; "1933"; "Journal article reprint from: Journal of the American Society of Agronomy, v.25:no.2 (1933:Feb.)."; ""; "P17739"; "pec"; "Soils--Composition.", "Sap."; "14256"; .