TY  - BOOK
TI  - OPTIMIZING THE SOIL PHYSICAL ENVIRONMENT TOWARD GREATER CROP YIELDS
SN  - 0123485401
AV  - 631.43/OPT 1
U1  - 631.43/OTP 
PY  - 1972///
CY  - NEW YORK
PB  - LONDON
N1  - index
ER  -