000
00239nam a22001217a 4500
003
SGT
082
_b
JOS
100
_a
JOSHI, S.R.
245
_a
TEACHING OF SCIENCE
260
_a
DELHI
_b
APH
_c
2019
300
_a
383
942
_2
ddc
_c
BK
_0
1
999
_c
19910
_d
19910