000
00264nam a2200121Ia 4500
008
220201s1968 xx 000 0 eng d
082
_a
510
_b
GUP
100
_a
Gupta Reference .
245
0
_a
Practical Mathematics
260
_c
1968
300
_a
418
942
_2
ddc
999
_c
1002
_d
1002