Greensfelder, N. S.  1891- <br/><br/>
Eliminating waste in blasting, 
by N.S. Greensfelder ... 
 - [Wilmington, Del.]  The Hercules powder co.  [c1922] 
 - 2 p. l., 48 p.  plates, diagrs.  23 cm. 
<br/><br/><label>LCCN: </label>ca 22000550  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Blasting.
<br/><br/><label>LC Class. No.: </label>TN279  / .G7