Garba I. - Geochemical discrimination of newly discovered rare-metal bearing and barren pegmatites in the pan-african (600+_150 Ma) basement of northern Nigeria. // Transactions of the Institution of Mining and Metallurgy section B: Applied Earth Science (Applied Earth Science: IMM Transactions B). 2003. V. 112. N. 3. P. 287 - 292.
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http://dx.doi.org/10.1179/037174503225011270
