Abstract
A COMPARATIVE study of the manganese deposits of the U.S.S.R. by A. G. Betekhtin, based on intensive investigations carried out during the last few years, adds considerably to our knowledge of the conditions governing the formation of manganese ores (Bull. Acad. Sci. U.R.S.S., No. 4, 3; English summary, 43; 1944).
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HOLMES, A. Genetic Types of Manganese Deposits. Nature 156, 87–88 (1945). https://doi.org/10.1038/156087a0
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DOI: https://doi.org/10.1038/156087a0