000
00295nam a2200109Ia 4500
008
220421s1997 xx 000 0 und d
041
_a
eng
082
_a
370.3028
_b
KUM/EDU
100
_a
Kumar K.L.
_9
571752
245
_a
Educational Technology
260
_a
New Delhi
_b
New Age International
_c
1997
999
_c
398015
_d
398015