PETROSYAN,M.I <br/><br/>
ROCK BREAKAGE BY BLASTING 

 - BROOKFIELD  BALKEMA  1994 
 - 141p.,25X16Cms. 
<br/><br/><label>ISBN: </label>81-204-0847-0 
<br/><br/><label>Dewey Class. No.: </label>622.2 P497