Wahl, Siegfried von. <br/><br/>
Investment appraisal and economic evaluation of mining enterprise / 
Siegfried von Wahl. 
 - Clausthal-Zellerfeld, Germany :  Trans Tech,  1983. 
 - xiii, 249 p. :  ill. 
<br/><br/> Includes tables of mathematical factors. 
<br/><br/><label>ISBN: </label>0878490485 
<br/><br/><label>ISSN: </label>07206267 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mineral industries--Finance--Mathematical models.<br/>Investments--Mathematical models.