Search for: [Subject = GRACE] OR [Subject = globalny model geopotencjału] OR [Subject = ekwiwalentna warstwa wody] OR [Title = On the selection of GRACE\-based GGMs and a filtering method for estimating mass variations in the Earth system over Poland] OR [Creator = Godah, Walyeldeen] OR [Creator = Szelachowska, Małgorzata] OR [Creator = Kryński, Jan]