Solomon's Treasure SOURCEBOOK - Book - Page 90
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THE SEARCH FOR KING SOLOMON’S TREASURE SOURCEBOOK
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402. “Mining for Gold: The Niche Concept and the Survival of Traditional Small-Scale Miners.”
By Evelyn J. Caballero. Philippine Sociological Review. Vol. 39, No. 1/4, 1991 PSS CONVENTION (January-December 1991), pp. 17-23. Philippine Sociological Society. p. 17.
http://lynchlibrary.pssc.org.ph:8081/bitstream/handle/0/988/07_Mining%20for%20Gold_%20The%20Niche%20Concept%20and%20
the%20Survival%20of%20Traditional%20Small-Scale%20Miners.pdf?sequence=1&isAllowed=y