TY  - JA
AU  - Cassel,D.K.
TI  - Tillage effects on soil bulk density and mechanical impedance
SN  - 0066-0566
U1  - 83-909775 
PY  - 1982///
KW  - Soil chemistry and physics
KW  - Soil cultivation and cropping systems
N1  - ill. 35 ref
T2  - ASA Special Publication American Society of Agronomy (USA). (1982). (no. 44) p. 45-67
ER  -