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Robert A. Logan fonds
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Articles on manganese : / by (Robert) Archibald Logan : [draft manuscripts, reports, research material and correspondence]

Folder includes "discovery of rare concretions of manganese"; "rare manganese concretions discovered in Nova Scotia"; "notes on manganese concentrations at Lake Charlotte, Halifax Co., N.S." and "biogeochemistry of manganese concretions (a progress report)". The folder also includes notes from Logan's 1961 diary; research material written by E.M. Kindle and correspondence between Robert Logan and Dr. W.R. Trost, Department of Chemistry, Dalhousie University.