TY - BOOK ID - 93427319 TI - Mathematical carnival PY - 1978 SN - 0140220410 PB - Harmondsworth Penguin DB - UniCat KW - Mathematics 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 - Wiskundige puzzels. KW - Wiskundige spelen. UR - https://www.unicat.be/uniCat?func=search&query=sysid:93427319 AB - ER -