TY  - BOOK
AU  - Platt,John Isaac[from old catalog]
AU  - Challinor,John[from old catalog]
TI  - Simple geological structures: a series of notes and map exercises, 
U1  - 551.1 
PY  - 1930///
CY  - London
PB  - T. Murphy & co.: New York, D. Van Nostrand co.
KW  - Geology
KW  - Maps. [from old catalog]
KW  - MCE
ER  -