TY  - BOOK
AU  - Richardson,Steven M.
AU  - Mac Sween,Hary Y.
TI  - Geochemestry: Pathways and Processes 
SN  - 0-13-351073-5
PY  - 1989///
CY  - Englewood Cliffs
PB  - Prentice Hall
KW  - Geoquímica
ER  -