000
00281nam a2200109Ia 4500
008
220201s1959 xx 000 0 eng d
100
_a
Graham,LA
245
0
_a
Ingenions mathe problems & methods
260
_b
New Delhi:O.oner publication inc.
_c
1959
300
_a
237
942
_2
ddc
999
_c
71846
_d
71846