TY  - BOOK
AU  - Speidel, David H.
AU  - Agnew, Allen Francis
TI  - NATURAL GEOCHEMISTRY OF OUR ENVIRONMENT
U1  - 551.9 
PY  - 1982///
CY  - Boulder
PB  - Westview Press
KW  - Geochemistry
KW  - Environmental Chemistry
ER  -