The four-colour theorem:
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Bibliographic Details
Main Author: Thomas, Joseph M. (Author)
Format: Book
Language:English
Published: Philadelphia, Pa. 1969
Subjects:
Item Description:Suppl. to the author's book "Systems and roots", 1962
Physical Description:13 S.

There is no print copy available.

Interlibrary loan Place Request Caution: Not in THWS collection!