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- catalog contributor b4717919.
 - catalog created "[1938]".
 - catalog date "1938".
 - catalog date "[1938]".
 - catalog dateCopyrighted "[1938]".
 - catalog extent "x, 74 p.".
 - catalog issued "1938".
 - catalog issued "[1938]".
 - catalog language "eng".
 - catalog publisher "London, Glasgow, Blackie and son limited".
 - catalog subject "511.2".
 - catalog subject "Numeration.".
 - catalog subject "QA141 .J6".
 - catalog subject "Time measurements.".
 - catalog subject "Weights and measures.".
 - catalog title "The reverse notation; introducing negative digits with twelve as base, by J. Halcro Johnston ...".
 - catalog type "text".