TY  - BOOK
AU  - Washington,U.S. Govt. Printing Office.
TI  - Well Drilling
U1  - 631.33 
PY  - 1943///
CY  - Washington
PB  - U.S.Govt.Printing Ofrice
KW  - Agriculture
KW  - Machinery,Tools
KW  - Well Drilling
ER  -