000
00315nam a2200145Ia 4500
008
220421s9999||||xx |||||||||||||| ||und||
020
_c
595
040
_a
BED
100
_a
Singh, Y K
245
0
_a
Inst. Technology in Education
260
_b
APH PUB.
_a
New Delhi
300
_a
263
500
_a
3212
942
_c
BK
999
_c
3212
_d
3212