000
00309nam a2200145Ia 4500
020
_a
0000000000000
082
_b
641
_a
510
100
_a
"g s teo"
245
0
_a
Mathematics
260
_a
Singapore
_c
1992
300
_a
300
944
_c
BK
999
_c
393372
_d
393372