TY  - BOOK
AU  - Sprague,Milton A  .
AU  - Triplett,Glover B  .
TI  - No-tillage and surface-tillage agriculture : the tillage revolution / 
SN  - 0471884103
U1  - 631.58 
PY  - 1986///
CY  - New York : 
PB  - John Wiley & Sons , 
KW  - NO-TILLAGE,TILLAGE
N1  - Include index
ER  -