000 003030000a22001330004500
245 _aData processing made simple
100 _aWooldridge, Susan
260 _aLondon
_bW.H. Allen
_c1976
300 _a235 p.
440 _aMade Simple Books
080 _a681.3.01
_bW6
041 _aEN
942 _cBK
999 _c105011
_d105011