000
nam a22 7a 4500
999
_c
46321
_d
46321
003
OSt
005
20190412153058.0
008
190412b xxu||||| |||| 00| 0 eng d
040
_c
sero soft
100
_a
Chitrasen
245
_a
Modern Education Technology Nature & scope
260
_a
Delhi
_b
Alfa Pub
300
_a
262
942
_2
ddc
_c
02