Cole, William Aaron <br/><br/>
Investigation of lightweight aggregates of North and South Dakota 
Cole, William Aaron 
 - Washington  Bureau of mines  1954 
 - ii, 43 p  il  27 cm 
 - RI  5906 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>investigación geofísica
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Dakota
<br/><br/><label>Universal Decimal Class. No.: </label>549