Shorter contributions to isotope research  topical reports on geochronology and isotope geochemistry 
/ edited by Zell E. Peterman and Diane C.Schnabel. 
 - Denver, Co.  U.S. Geological Survey  1986. 
 - iv, 221 pages :    illustration, ;    28 cm. 
 - U.S. Geological survey bulletin  1622 .
<br/><br/>Includes bibliographies. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geological time--Addresses, essays, lectures<br/>Isotope geology--United States--Addresses, essays, lectures<br/>Geology--United States--Addresses, essays, lectures