TY  - BOOK
AU  - Koolen, A.J..
TI  - Advanced  series in agricultural sciences 13: Agricultural soil mechanics / 
SN  - 0-387-12257-5
U1  - J;1(B7) 
CY  - New York : 
PB  - Springer-Verlag.
KW  - Agriculture<Fields>
ER  -