Lepper, C. Melvin <br/><br/>
Improvinciaed electrical resistivity field system for shallow earth measurements 
Lepper, C. Melvin 
 - Washington  Bureau of mines  1974 
 - RI 7942 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>METALURGIA<br/>METALLURGY
<br/><br/><label>Subjects--Index Terms: </label>MEDICION DE TIERRA SUPERFICIAL SHALLOW EARTH MEASUREMENTS 
<br/><br/><label>Universal Decimal Class. No.: </label>669