TY  - BOOK
AU  - Smith,W.O.
ED  - United States
TI  - Mechanism of gravity drainage and its relation to specific yield of uniform sands
U1  - 550.8 
PY  - 1961///.
CY  - Washington: 
PB  - U. S. Government Printing Office, 
KW  - Drainage
KW  - Sand
N1  - Includes bibliographical references (p. A-12)
ER  -