000 00257nam a2200097 4500
008 220603b xxu||||| |||| 00| 0 eng d
040 _cIIT Kanpur
245 _aAKADEMIYA NAUK SSR: PRIKLADNAYA MATEMATIKA I MEKHANIKA [Vol.17]
260 _c1953
942 _cJ
999 _c565660
_d565660