00624nam a2200217 a 450000500170000002000160001708200160003310000230004924500360007225000120010826000300012030000270015049000330017769000250021070000220023596400160025796500250027399700190029899900190031795200700033620251203110931.0  a97881286345  a510.76bSOU  aDesouza, Paulo Ney  aBerkley problems in mathematics  a3rd ed.  aNew DelhibSpringerc2004  axiv, 591p.c24 cm.bPB  aProblem books in mathematics  aMathematics-Problems  aSilva, Jorge-Nuno  bcdefg_  aMathematics-Research  a130236 LIBSC C  c107907d107907  00104070aPUbPUd2008-03-31g296.80l0o510.76 SOUp130236yBK