00590nam a2200169Ia 4500001000700000003000500007005001700012008004100029082001100070100004700081245010300128260003100231300003200262500004900294504004000343650003700383118823BIBL20160527184807.0861118s1968    mx a     b    00010 spa  0 a510.7610aNorthrop, Eugene P.q(Eugene Purdy)2Local10aParadojas matemáticascEugene P. Northrop ; traducción al español por Ricardo Ortiz Vazquez.0 aMéxico :U.T.H.A.cc1968.  axi, 355 p.billus., diagrs.  aRiddles in mathematics :a book of paradoxes.  a"Notes and references": p. 337-348. 0aMathematical recreations.2Local