000 00251pas a2200097 454500
008 160820b1946 xxu||||| |||| 00| 0 eng d
022 _a
245 _aDATA SYSTEM ENGINEERING
260 _aUSA
_bE.H.NELSON PUB.CO.
_c1946
906 _a
_b
_c
_dJan - Dec,2008
999 _c472527
_d472527