TY  - BOOK
AU  - edited by P.E. Rijtema and H. Wassink
TI  - Water in the unsaturated zone
U1  - 551.48 21st ed.
PY  - 1969///
CY  - Belgium
PB  - United Nations Educational, Scientific and Cultural Organization
KW  - Ground water
KW  - Hydraulics
KW  - Hydrology
KW  - Soil moisture
ER  -