TY  - GEN
AU  - 
AU  - BLANKWAARDT,Bob.
TI  - HAND DRILLED WELLS:A MANUAL ON SITING,DESIGN,CONSTRUCTION AND MAINTENANCE
U1  - 631.3/BLA 
PY  - 1984///
CY  - DAR ES SALAAM -TANZANIA.
PB  - Rwegarulila Water Resources Institute.
ER  -