Koefoed, Otto  1913, <br/><br/>
Geosounding principles / 
O. Koefoed 
 - 2 volúmenes :  ilustraciones 
 - Methods in geochemistry and geophysics ;  14A-14B .
<br/><br/>Contenido: 1. Resistivity sounding measurements.--2. Patra, H. P. and Malik K. time-varying geoelectric soundings 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Prospección--Métodos geofísicos
<br/><br/><label>LC Class. No.: </label>TN269  / K63