000
00252nam a2200109 4500
008
160616s 000 0
245
_a
Continued fractions
100
_a
Khintchine, A Ya
500
_a
B217 K31
942
_c
BK
_2
BK5221
_0
1
080
_a
519.1 KHI
999
_c
5221
_d
5221