000 00620nam a2200253Ia 4500
003 OSt
005 20220912153039.0
006 a|||||r|||| 00| 0
007 ta
008 220909b |||||||| |||| 00| 0 eng d
024 _a23700
037 _cTextual
040 _aCSL
_beng
_cCSL
041 _aeng
082 _aB46, K6
100 _aKrasnoselskity M A
245 0 _aPlane vector fields
260 _c1966
300 _ap.
_ccm.
700 _a Perov A I
700 _a Povolotskiy A I
942 _hB46, K6
_cTEXL
_2CC
999 _c97187
_d97187