1. Small-scale mining : a guide to appropriate equipment
پدیدآورنده : Prepared by James F.McDivitt, Dennis Lock and others, on behalf of the Association of Geoscientists for International Developmetn
کتابخانه: (طهران)
موضوع : Mining engineering , Mines and mineral resources - Equipment and supplies
رده :
TN
145
.
S62