000
00252nam a2200109 4500
008
160616s 000 0
245
_a
Calculus of variations
100
_a
Akhiezer, Naum I
500
_a
B42 K23
942
_c
BK
_2
BK1319
080
_a
517.97 AKH
999
_c
1319
_d
1319