Every planar map is four colorable

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Bibliographic Details
Main Authors: Appel, Kenneth I (Author), Haken, Wolfgang (Author)
Format: Book
Language:English
Published: Providence American Mathematical Society 1989
Series:Contemporary mathematics, 98
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Biblioteca de Matemática -

Holdings details from Biblioteca de Matemática -
Call Number: 511.5 APP 1989
Copy 2691426 Available Place a Hold