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SUBJECTS (1-2 of 2)
Four Colour Problem
1
Mark
  Every planar map is four colorable
Appel, Kenneth I., 1932-2013.
Providence, R.I. : American Mathematical Society, c1989. -Access this resource online
c1989
EBOOKS
2
Mark
  Four colours suffice : how the map problem was solved.
Wilson, Robin J., 1943-
London : Penguin, 2003.  
2003
BOOK
LOCATION SHELVED AT LOAN TYPE STATUS
 BJL 3rd Floor  QA 612.19 W7  8 WEEK LOAN  AVAILABLE
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