TY  - BOOK
AU  - DeWalle, Foppe B
AU  - Sevenster, J
TI  - Agriculture and the environment : minerals, manure and measures
SN  - 9780792347941
U1  - 363.731 WAL 
PY  - 1998///
CY  - Boston
PB  - Kluwer Academic Publishers
KW  - Agricultural pollution - European Union Countries
ER  -