Books by Douglas Brumbaugh

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Scratch Your Brain Where It Itches C1: Math Games, Tricks & Quick Activities image

Scratch Your Brain Where It Itches C1: Math Games, Tricks & Quick Activities

ISBN-13: 9780894555244
Format: Paperback, 42 pages
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Scratch Your Brain Where It Itches E1-Geometry: Math Games, Tricks & Quick Activ image

Scratch Your Brain Where It Itches E1-Geometry: Math Games, Tricks & Quick Activ

ISBN-13: 9780894555268
Released: Jan 01, 1994
Format: Paperback, 54 pages
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