00612nam a22001937a 4500 56229 56229 20200117153827.0 200117b ||||| |||| 00| 0 eng d Donated by Mathematics Department 515.35 ELS L Ė Ėlʹsgolʹt︠s︡ ifferential equations and the calculus of variations /L Ė Ėlʹsgolʹt︠s︡ Moscow, :Mir Publishers , 1970. 440 pages ;22 cm 00 Mathematics ;Differential equations. ;Calculus of variations. L Ė Ėlʹsgolʹt︠s︡ MDL 0 0 ddc 0 0 MDL SNUL 2020-01-17 Donated by Mathematics Department 0.00 0 515.35 ELS M076 2020-01-17 00:00:00 2020-01-17 MDL