00817nam0 2200277 450 00001829820090203110737.00387903054354090305420081028d1978----km-y0itay50------baengUSa-------001yyMathematics todaytwelve informal essaysedited by Lynn Arthur SteenNew YorkSpringerc1978VIII, 367 p.ill.24 cmMathematics today55569MatematicaSaggi51020MatematicaSteen,Lynn ArthurITUNIPARTHENOPE20081028RICAUNIMARC000018298M 510/17M 286DSA2008S 510/13S A, 1078DSA2009Mathematics today55569UNIPARTHENOPE