Advances in organic geochemistry :  proceedings of the third international congress / 
edited by G. D. Hobson and G. C. Speers 
 - Oxford, UK :  Pergamon,  1970 
 - 577 p. :  ill., maps ;  24 cm. 
<br/><br/>Includes bibliographies 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geochemistry--Congresses<br/>Chemistry, Organic--Congresses