TY  - BOOK
AU  - Ball, Shirley
TI  - Well Pumping Sucker Rod System 
U1  - 621.69 
PY  - 1967///
CY  - Usa : 
PB  - American Petroleum Institute, 
KW  - Pumping
KW  - Rod System
N1  - NN; Pt. 1. An Introduction to Well Pumping
ER  -