UNESCO. (1995). A Global Geochemical Database for Environmental and Resource Management: Final Report of IGCP Project 259. Love Printing Service Ltd.
Чикаго маягийн жагсаалтUNESCO. A Global Geochemical Database for Environmental and Resource Management: Final Report of IGCP Project 259. Canada: Love Printing Service Ltd, 1995.
MLA ишлэлUNESCO. A Global Geochemical Database for Environmental and Resource Management: Final Report of IGCP Project 259. Love Printing Service Ltd, 1995.
Warning: These citations may not always be 100% accurate.