AU  - WYMER,NORMAN
TI  - OIL
T2  - LONGMAN STRUCTURAL READERS, STAGE 4
SN  - 058253755X
U1  - 553.282/WYM 
PY  - 1981///
CY  - ENGLAND
PB  - LONGMAN GROUP LIMITED
KW  - EARTH SCIENCES
KW  - OIL
N1  - BOOK NO. 10594 IS SIXTH IMPRESSION
ER  -