Lanphere, Marvin A.,  1933- <br/><br/>
First-principles calibration of 38Ar tracers :  implications for the ages of 40Ar/39Ar fluence monitors / 
by Marvin A. Lanphere and G. Brent Dalrymple. 
 - Reston, VA :  Denver, CO :  U.S. Dept. of the Interior, U.S. Geological Survey ;  USGS Information Services [distributor,  2000] 
 - iii, 10 p. :  ill. ;  28 cm. 
 - Professional paper ;  1621 .
 - U.S. Geological Survey professional paper ;  1621. .
<br/><br/>Includes bibliographical references (p. 10). 
<br/><br/><label>ISBN: </label>0607937696 
<br/><br/><label>LCCN: </label>00-022524 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Argon-argon dating--Standards.
<br/><br/><label>LC Class. No.: </label>QE508  / .L26 2000 
<br/><br/><label>Dewey Class. No.: </label>551.7/01 
<br/><br/><label>Gov. Doc. Class. No.: </label>I 19.16:1621