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100 _aDigital Equipment Corporation
245 _aIntroduction to computer - based education
250 _a2
260 _aS. l. :
_bDigital Equipment Corporation
300 _av ; 142p.
650 _aCOMPUTADORES
040 _aDLC
_cDLC
942 _2ddc
_cBK
999 _c137524