Heiland, Carl August,  1899- <br/><br/>
Geophysical exploration / 
by C. A. Heiland. 
 - New York :  Hafner Publishing Company,  1968. 
 - xiii, 1013 p. :  ill., diagrs., tables ;  24 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geophysics.<br/>Prospecting--Geophysical methods.