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Small-scale mining in the developing countries / United Nations. - New York : United Nations, 1972. - vi, 171 p. illus. 28 cm.

"United Nations publication. Sales no.: E.72.II.A.4."

Bibliography: p. 158-166.

73154202


Mineral industries--Developing countries.

JX1977 / .A2 ST/ECA/155

300/.8 s 338.2 / UNS
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