000 00265nam a22001217a 4500
999 _c155434
_d155434
082 _a
_b
100 _aDas R C
245 _aEducational technology:
_bA basic test/
_cby Das R C.
260 _a
_bSterling,
_c1993.
300 _a242p.
650 _a
942 _cBK