TY  - BOOK
AU  - SCHILFGAARDE,J.van et al,editors
TI  - Drainage for agriculture.
PY  - 1977///
CY  - [S.l.]
PB  - American Society of Agronomy
UR  - http://www.amazon.com/exec/obidos/ASIN/B000TYCDOI/chopaconline-20
ER  -