TY  - BOOK
AU  - Walther, John V. 
TI  - Earth's natural resources
SN  - 978-1-4496-3234-2
U1  - 333.7 W237 2014 
PY  - 2014///
CY  - Burlington, MA
PB  - John & Bartlett Learning, 
KW  - Natural resources
N1  - Includes references and index
ER  -