TY  - BOOK
AU  - 
AU  - Van Schilfgaarde,Jan,ed
TI  - Drainage for agriculture
T2  - Agronomy
AV  - TC970 .D68
PY  - 1974///
CY  - Madison, Wis.
PB  - American Society of Agronomy
KW  - Drainage
KW  - Agriculture
ER  -