Vorobjev, B. M <br/><br/>
Coal mine planning under similar peruvian conditions 

<br/><br/> <Donation ORSTOM> 
<br/><br/>bibliogr. p. 13 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mine<br/>Charbon<br/>Exploitation minière
<br/><br/><label>Subjects--Index Terms: </label>Pérou