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Identification of Geometric Patterns by Topological Description of Their Envelopes
H. P. Luhn
International Business Machines Corporation. Product Development Laboratory (Poughkeepsie, N.Y.)
出版
International business machines Corporation
, 1956
URL
http://books.google.com.hk/books?id=5_VAHAAACAAJ&hl=&source=gbs_api