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Treasures of the Triangle. By G. H. Grattan-Guinness.Part 1. Concurrent Lines (a) O and I. 37 frames. Teaching notes. Pp. 8.Part 2. Concurrent Lines (a) G and H. 36 frames. Teaching notes. Pp. 8.Part 3. Collinear Points 42 frames. Teaching notes. Pp. 8. 1950. (Educational Productions Ltd.)
Published online by Cambridge University Press: 03 November 2016
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- Copyright © The Mathematical Association 1951