Geosounding principles / 
Otto Koefoed 
 - Amsterdam :  Elsevier Science,  1979. 
 - v :  ill., graphs ;  25 cm. 
 - Methods in geochemistry and geophysics ;  v.14A-14B. .
<br/><br/>Bibliography : p. 269-272. 
<br/><br/> Resistivity sounding measurements -  Time-varying geoelectric sounding.  vol. 1.  vol. 2. 
<br/><br/><label>ISBN: </label>0444417044  v.1 0444418113  v.2 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Prospecting--Geophysical methods.