Nichols, Herbert L. <br/><br/>
Modern techniques of excavation 

 - Greenwich, Connecticut :  North Castle Books,  1956 
 - Pag. varía  : ilus. 
<br/><br/><label>LCCN: </label>32143 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Excavadoras.
<br/><br/><label>Dewey Class. No.: </label>624.152  / N52m