00263nam a2200109 a 450000500170000002000150001708200180003210000200005024500230007026000420009330000180013520251203090444.0  a0540173951  a515,bDD, Spa  aSpanier, Jerome  aAtlas of functions  aNew YorkbHemisphere Publishingc1987  a699p., 22 cm.