000 002710000a22001210004500
008 160502b1952 xxu||||| |||| 00| 0 eng d
041 _aeng
080 _a621.384
_bF5
942 _cBK
100 _aFischer, B.
245 _aRadio and television mathematics
260 _c1952
999 _c8443
_d8443