000
00290nam a2200133Ia 4500
100
_a
Mangal, S. K.
365
_b
22.5
942
_c
BK
654
_a
245
_a
Text book on teaching of Mathematics
260
_a
Ludhiana
_b
Prakash brothers
_c
1981
082
_a
375.51
300
_a
8352
999
_c
388350
_d
388350
041
_a
eng