000 00428nam a22001457a 4500
008 230321b |||||||| |||| 00| 0 eng d
040 _aNational Science Library
_cNational Science Library
080 _aD 681.3
_bM2
100 _aSpencer, Donald
245 _aData processing:
_bAn introduction
260 _aColumbus:
_bCharles E Merrill Publishing Co.,
_c1982
300 _a396p.
650 _aTechnology
942 _2udc
_cBK
999 _c11635
_d11635