000 00343pam a2200157a 44500
008 230515b1985 xxu||||| |||| 00| 0 eng d
020 _aNULL
041 _aENGL
082 _a510 /PER
100 _aPERELMAN Y.
245 _aMATHEMATICS CAN BE FUN
250 _aN.D.
260 _aNULL
_bMIR P
_c1985
300 _a400 HB
650 _aNULL
999 _c620341
_d620341