000
00270nam a2200121 4500
008
160616s 000 0
245
_a
Sidon sets
100
_a
Lopez, Jorge M
100
_a
Ross, Kenneth A
500
_a
B31 L51
942
_c
BK
_2
BK4619
080
_a
510.21 LOP
999
_c
4619
_d
4619