000 00278nam a2200121Ia 4500
008 220201s1969 xx 000 0 eng d
082 _a681.142
100 _aLaver, FJM (HMSO)
245 0 _aIntroducing computers
260 _bLondon: HMSO
_c1969
300 _a68
942 _2ddc
999 _c77738
_d77738