TY  - BOOK
AU  - Sprague, Milton A.,
TI  - No-tillage and surface-tillage agriculture
SN  - 0471884103
U1  - 631.38/SPR 
PY  - 1986///
CY  - New York
PB  - John Wiley & Sons
KW  - No-tillage
KW  - Tillage
ER  -