TY - BOOK ID - 8403153 TI - Knotted doughnuts and other mathematical entertainments PY - 1986 SN - 0716717999 0716717948 PB - New York : W. H. Freeman, DB - UniCat KW - 51-8 KW - Mathematical games and recreations KW - 51-8 Mathematical games and recreations KW - Mathematical recreations KW - Mathematical puzzles KW - Number games KW - Recreational mathematics KW - Recreations, Mathematical KW - Puzzles KW - Scientific recreations KW - Games in mathematics education KW - Magic squares KW - Magic tricks in mathematics education KW - Jeu UR - https://www.unicat.be/uniCat?func=search&query=sysid:8403153 AB - ER -