Waples, Douglas W. <br/><br/>
Biomarkers for geologists - a practical guide to the application of steranes and triterpanes in petroleum geology 
Douglas W. Waples, Tsutomu Machihara 
 - Tulsa, Okla  American Association of Petroleum Geologists  1991 
 - 91 p. : ill. ; 28 cm. 
 - The AAPG methods in exploration series  9 .
<br/><br/>p. 77-85 
<br/><br/><label>ISBN: </label>0891816593 
<br/><br/><label>LCCN: </label>91-215982 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Petroleum--Prospecting<br/>Geochemical prospecting<br/>Biochemical markers