TY  - BOOK
AU  - Wall Berry
TI  - Cooperatives in the petroleum industry. Pt.4
T2  - Petroleum Industry Research Foundation, Publication
U1  - XM,9(F555).73.N4, H7 
PY  - 1947///
CY  - NY
PB  - PIRF          
KW  - Cooperative Economics
ER  -