TY  - JA
AU  - Schafer,R.L.
AU  - Johnson,C.E.
TI  - Changing soil condition:  the soil dynamics of tillage
SN  - 0066-0566
U1  - 83-909789 
PY  - 1982///
KW  - Soil chemistry and physics
KW  - Soil cultivation and cropping systems
N1  - 37 ref
T2  - ASA Special Publication American Society of Agronomy (USA). (1982). (no. 44) p. 13-28
ER  -