Compare revisions: 1971_Sackson_177_June 06.jpg
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In this book there were diagrams similar  | In this book there were diagrams similar  | ||
[sketch of 8 x 8 grid with two overlapping rectangles appearing]  | |||
to that shown, but with more shapes and  | to that shown, but with more shapes and  | ||
dots. I suggested to Martin that he ask the  | dots. I suggested to Martin that he ask the  | ||