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Publication:3800288
zbMath0654.20064MaRDI QIDQ3800288
N. F. Smythe, Richard H. Crowell
Publication date: 1987
Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Graphs, diagram schemes, precategories (18A10) Groupoids (i.e. small categories in which all morphisms are isomorphisms) (20L05)
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