TY  - GEN
AU  - Norman, A.G.
AU  - Pierre, W.H.
TI  - Soil and fertilizers phosphorous : in crop nutrition V.4
T2  - Agronomy : a series of monographs
U1  - 631.85 PIE 
CY  - Newyork, Academic press
KW  - Plant nutrition - soil phosphorous/ phosphatic fertilizers
ER  -