Symposium advances in rock mechanics in underground coal mining / 
International Society for rock mechanics, south african national group, eastern transvaal branch 
 - 164 páginas 
<br/><br/><label>ISBN: </label>0620135271 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mecánica de rocas--Discursos, ensayos, conferencias
<br/><br/><label>LC Class. No.: </label>TA710.A1  / S885