TY  - BOOK
AU  -  Billings,Marland P.
TI  -  Structural geology / 
U1  -  551.8 BIL 
PY  - 1942///, repr. 1949
CY  -  New York : 
PB  -  Prentice-Hall, 
KW  -  Geology, Structural
ER  -