Sumy port according to port surveys in the White Sea 1910-1915.

Vikhma, A.M.Sumy port according to port surveys in the White Sea 1910-1915./ Higher.Council Nar.Khoza.GLUPR.Statestructures.Departurewater page;Cost.Ing.Communication paths A.M.Vorticulture.- Petrograd: Type.Ros.Hydrole.In-Ta, 1922. -63 s.: il., cards., Table .. - (Materials in portilatation; Vol. 67).-750 Ex..I. USSR.Supreme Council of the national economy.GLUPR.Statestructures.DepartureWater pageElectronic Source: PB