Geochemical biomarkers / 
edited by T.F. Yen and J.W. Moldowan. 
 - Chur, Switzerland :  Harwood Academic Publishers,  1988. 
 - xii, 438 p. 
<br/><br/><label>ISBN: </label>3718604833 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Organic geochemistry.