Mathematical Games : The topology of knots, plus the results of Douglas Hofstadter's Luring Lottery

Des Pawson Resources box, item 2

An extract of an article on the topology of knots. Black and white photocopy, originally published in Scientific American, Vol. 249, No. 3 (September 1983). Pages numbered pp.14, 16, 18-21. 6 stapled sheets.