TY  - BOOK
AU  - Collin Shephard 
TI  - Essentials of Geology 
SN  - 978-1-63549-433-4
U1  - Cir. 550 Es78 C2017 
PY  - 2017///
CY  - New York, USA: 
PB  - Larsen & Keller
ER  -