000 00514pam a2200169a 44500
008 160408b1977 xxu||||| |||| 00| 0 eng d
082 _a001.644
_bW151c
100 _aWalker, Bruce J.
245 1 _aCOMPUTER SECURITY AND PROTECTION STRUCTURES
260 _aStroudsburg, Dowden
_bHutchinson & Ross
_c1977
300 _a142
650 _aComputers -- Access Control
650 _aElectronic Data Processing Departments -- Security Measures
700 _aBlake, Ian F.
964 _gCIRC
997 _aA51762 C
999 _c300430
_d300430