TY  - BOOK
AU  - Simpson,Ken
TI  - Fertilizers and manures
SN  - 058244747X (pbk.) :
AV  - S633 .S624 1986
U1  - 631.81 
PY  - 1986///
CY  - London, New York
PB  - Longman
KW  - Fertilizers
KW  - Manures
N1  - Includes indexes; Bibliography: p. 243
ER  -