Nichols, Herbert L.  1908- <br/><br/>
Modern techniques of excavation / 
Illus. by Helen shwagerman. 
 - 1 volumen (en varias paginaciones) 
<br/><br/> "shortened and revised version of moving the earth." 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Excavadoras
<br/><br/><label>LC Class. No.: </label>TA735  / N5