TY  - BOOK
AU  - Richardson,Steven McAfee
AU  - McSween,Harry Y.
TI  - Geochemistry: Pathways and processes 
SN  - 0-13-351073-5
AV  - QE515 R48
PY  - 1989///
CY  - Englewood cliffs, new jersey
PB  - Prentice Hall
KW  - Geoquímica
ER  -