Palchik, V. <br/><br/>
Influence of physical characteristics of weak rock mass on height of caved zone over abandoned subsurface coal mines 

 - Berlin  Springer-Verlag  mayo 2002 
 - pp. 92-101  ilus. 
<br/><br/><label>ISSN: </label>0943-0105 
<br/><br/><label>Subjects--Topical Terms: </label><br/>MINAS ABANDONADAS<br/>MINAS DE CARBON<br/>POROSIDAD<br/>RESISTENCIA DEL SUELO