TY  - BK
ED  - Conservation Tillage Information Center (U.S.)
TI  - Conservation tillage audio-visual materials; 1987 directory
PY  - 1987///
CY  - Wayne, IN (USA) :, 
KW  - Information flow
KW  - Soil conservation
KW  - Tillage
KW  - AGROVOC
ER  -