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An illustrated Handbook to Radcliffe's Patent Triangle of Number an Apparatus for Demonstrating Principles and Processes of Arithmetic on a new system and other Educational Inventions

Publication date : 1899

Author or editor: Radcliffe, William

Notes: With photograph of William Radcliffe inside rear cover.In Education scrapbook.

Language: English

Physical description: 16 p. : ill.; 22 cm.; pamphlet

Item name: pamphlet

Collection: Library

ID number: M 04494

Classification: D.426/1xf(p.7)


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