TY  - BOOK
AU  - Koolen,A.J.
AU  - Kuipers,H.
TI  - Agricultural soil mechanics
SN  - 3540122575
PY  - 1983///
CY  - Berlin
PB  - Springer-Verlag
KW  - Soil mechanics
KW  - Tillage
N1  - Bibliography : p. 228 -235
ER  -