All 1 Jakow Trachtenberg releases on Paperback Book
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![Cover for Jakow Trachtenberg · The Trachtenberg Speed System of Basic Mathematics (Paperback Book) [Main edition] (1989)](https://imusic.b-cdn.net/images/item/original/165/9780285629165.jpg?jakow-trachtenberg-1989-the-trachtenberg-speed-system-of-basic-mathematics-paperback-book&class=scaled&v=1538929628)