TY  - BOOK
AU  - Spencer,	Edgar Winston
TI  - Introduction to the structure of the earth 
U1  - 551.8 SPE  
PY  - 1969///.
CY  - New York : 
PB  -  McGraw-Hill Book Company, 
KW  - Geology, Structural
KW  - Tectonique.
N1  - Includes index.
ER  -