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Marchant Calculator materials. Marchant Methods. Figuremaster/Figurematic. Examples of the publication on the ins-and-outs and tricky bits, useful data, so on, for using the calculator to its fullest advantage.
24 short publication, about 50pp all together. Only a few dates appear but they are all 1941--I suspect that the group is from this year or thereabouts. The group:100.00
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