TY  - GEN
AU  - 
AU  - Pierre, W.H., ed.
AU  - Norman, A.G., ed.
TI  - Soil and fertilizer phosphorus in cro nutrition
PY  - 1953///
CY  - New York
KW  - Phosphorus Requirement
KW  - Plant Nutrition
N1  - Vol. IV : Prepared by Ameriacan Society of Agronomy
ER  -