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Google圖書搜尋
A Serial Notation for Describing the Topology of Multidimensional Branched Structures Nodal Index for Branched Structures
H. P. Luhn
出版
International business machines Corporation
, 1955
URL
http://books.google.com.hk/books?id=dmQTMwEACAAJ&hl=&source=gbs_api