Bradshaw, Peter M. D. <br/><br/>
Exploration geochemistry 
Peter M.D. Bradshaw, D. Richard Clews [and] John L. Walker. 
 - Toronto :  Barringer Research,  1972. 
 - 47 p. ;  32cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geochemistry prospecting.<br/>Geochemistry.