Nagelschmidt, G., "The Mineralogy of Soil Colloids" (Tech. Com. No. 42, Imperial Bureau of Soil Science, Harpenden), p. 15. See Aldrich, Hellman and Jackson, Soil Sci ...
Heineken Lokpobiri, minister of state for petroleum resources (oil), says the ministry is identifying regions with high mineral exploration potential. In a statement on Thursday, Lokpobiri said ...