The author - Izidor Hafner%0ABased on work by%3A Erik D. Demaine and Joseph O'Rurke - is not found.
Izidor Hafner%0ABased on work by%3A Erik D. Demaine and Joseph O'Rurke The author - Izidor Hafner%0ABased on work by%3A Erik D. Demaine and Joseph O'Rurke - is not found.
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