TY  - BOOK
AU  - Speidel,David H.
AU  - Agnew,Allen F.
TI  - The natural geochemistry of our environment
SN  - 0865311102 :
U1  - 551.9 
PY  - 1982///
CY  - Boulder, Colo.
PB  - Westview Press
KW  - Geochemistry
KW  - Environmental chemistry
KW  - Organisms
N1  - Includes bibliographical references and index
ER  -