TY  - BOOK
AU  - " Thorne, D. Wynne"
TI  - "Soil, water and crop production"
U1  - 631.4+631.811.91:633.002.2 L9 
PB  - "The Avi publishing company, 1979"
KW  - " Thorne, Marlowe D."
KW  - Agricultural ecology ; Cropping systems
ER  -