Feasibility of horizontal boring for site investigation in soil / 
C. H. Dowding 
 - Washington, D.C. :  Federal Highway Administration, Offices of Research & Development,  1976 
 - 1v.(various pagings) :  ill.  ;  28 cm. 
 - Report ;  no. FHWA-RD-76-1 .
<br/><br/> Final report 
<br/><br/>Includes bibliographical references 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Boring<br/>Excavation<br/>Tunneling
<br/><br/><label>Dewey Class. No.: </label>624.152