00720cam a2200241 i 4500 1542952 BD-DhUL 20140822083948.0 810801m19671968nyua b 000 0 eng d 0471693359 (OCoLC)ocm07634470 KSU KSU OCL ZCU 510.7 POM Pólya, George, 1887-1985. Mathematical discovery : on understanding, learning, and teaching problem solving / George Polya. New York : Wiley, [1967-1968] 2 v. : ill. ; 24 cm. Includes bibliographies. Mathematics Problems, exercises, etc. Problem solving. AUTH ddc BK 4985 4985 0 0 ddc 0 510_700000000000000_POM 0 NFIC 8724 DUSL DUSL GEN 1977-05-09 Purchase 0.00 510.7 POM A147742 2014-08-22 2014-08-22 BK