01020nam a2200277 i 450099100126939970753620020507190339.0970108s1993 us ||| | eng 0883857006b10824091-39ule_instLE01309647ExLDip.to Matematicaeng510AMS 00A35Nelsen, Roger B.55994Proofs without words :exercises in visual thinking /Roger B. NelsenWashington :Published and distributed by The Mathematical Association of America,c1993vii, 152 p ;26 cm.Classroom resource materials ;1Methodology of mathematics.b1082409123-02-1728-06-02991001269399707536LE013 00A NEL11 (1993)12013000069289le013-E0.00-l- 02020.i1093176428-06-02Proofs without words924244UNISALENTOle01301-01-97ma -engus 01