Palmer, Harold S. <br/><br/>
New graphic method for determining the depth and thickness of strata and the projection of dip. 

 - Washington  Government Printing Office  1918 
 - pp. 123-126 
<br/><br/> Impreso 
<br/><br/><br/>Ingles 
<br/><br/><label>Subjects--Topical Terms: </label><br/>MINERIA