York, Derek <br/><br/>
The Earth's age and geochronology / 
by Derek York and Ronald M. Farquhar 
 - 1st ed. 
 - Oxford :  Pergamon Press,  1972 
 - viii, 178 p. :  ill. ;  22 cm. 
<br/><br/>Bibliography : p. 167-176 
<br/><br/><label>ISBN: </label>0080163874 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geological time