000
00280nam a2200121Ia 4500
008
230321s9999 xx 000 0 und d
082
_a
370
_b
AGG
100
_a
Aggarwal, J.C
245
0
_a
Essentials of Educational Technology
260
_b
Vikas
_c
2004
300
_a
463
942
_c
BK
999
_c
823
_d
823