TY  - BOOK
AU  - Van Beers, W. F. J. ,
TI  - Some Monographs for the Calculation of Drain Spacings
SN  - 907026059X
U1  - 627 
PY  - 1979///
CY  - Netherlands
PB  - International Institute for Land Reclamation and Improvement
KW  - Hydraulic engineering
ER  -