LEADER 00000nz 2200000n 4500 001 n 82088197 003 DLC 005 19840322000000.0 008 821105n| adannaab| |a aaa ||| 010 n 82088197 040 DLC|cDLC 100 1 Heafford, Philip Ernest.|tMath entertainer 400 1 Heafford, Philip Ernest.|tFun with mathematics 670 His Fun with mathematics, 1982, c1959.