TY  - BOOK
AU  - Uren,Lester Charles
TI  - Petroleum production engineering
T2  - Petroleum Production Economics
U1  - 622.338 U2 0000591 
PY  - 1950///
CY  - New York
PB  - McGraw-Hill Book Company
KW  - Producción de petróleo y gas
ER  -