Remarks on the four color problem
By: by Morris E. Rill.
Contributors: Oklahoma. University. Mathematics Service Committee.
Series: OU Dept. of Mathematics. Preprints, issue no. 94
Publisher: University of Oklahoma]
Published: 1969
Place of publication: [Norman
Language: eng
Number of pages: 22
Subjects: Four-color problem.
Notes: Bibliography: leaf [23]
On cover: OU Math Service Committee.