TY  - BOOK
AU  - Yen T F Ed.
AU  -  Moldowan J M Ed
TI  - Geochemical biomarkers
SN  - 3718604833
U1  - H:(E5), M8 
PY  - 1988///
CY  - Switzerland
PB  - Harwood Academic Publishers       
KW  -  Organic Geochemistry
KW  - Geology
ER  -