The institution of civil engineers <br/><br/>
Safety in wells and boreholes 

 - Great Britain  The institution of civil engineers  1972 
 - 23 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Wells, Boreholes
<br/><br/><label>Dewey Class. No.: </label>556.34.004 N72