TY  - BOOK
AU  - LUTGENS,FREDERICK K.
AU  - TARBUCK,EDWARD J.
TI  - ESSENTIALS OF GEOLOGY / 
U1  - 550 
PY  - 1992///
CY  - [S.N] : 
PB  - MACMILLAN PUBLESHING COMPANY ، 
KW  - GEOLOGY
ER  -