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2. Geochemical Exploration Methods for Mineral Deposits;Beus,1977
3. Economic geology prospects in the Wadi Kid south area, Sinai;Bogoch;Isr. Geol. Surv., Rep. MP 504/69,1969
4. Experimental use of the biogeochemical method in prospecting for uranium under desert conditions;Botova;Geochemistry,1963
5. Trace Elements in Biogeochemistry;Bowen,1966