Mcdivitt James F <br/><br/>
Small Scale Mining A Guide To Appropriate Equipment Prepared By James F Mcdivitt Dennis Lock And Others On Behalf Of The Association Of Geoscientists For International Development 

 -  London : Intermediate Technology Publications 1990 
 - 98 
<br/><br/><br/>Eng 
<br/><br/><label>ISBN: </label>1853390127