Search for: [Subject and Keywords = Astronomia \-\- czasopisma. \[KABA\]] OR [Subject and Keywords = Chemia \-\- czasopisma. \[KABA\]] OR [Subject and Keywords = Fizyka \-\- czasopisma. \[KABA\]] OR [Subject and Keywords = Geografia \-\- czasopisma. \[KABA\]] OR [Subject and Keywords = Geologia \-\- czasopisma. \[KABA\]] OR [Subject and Keywords = Matematyka \-\- czasopisma. \[KABA\]] OR [Subject and Keywords = Astronomia \-\- czasopisma. \[KABA\]] OR [Subject and Keywords = Chemia \-\- czasopisma. \[KABA\]] OR [Subject and Keywords = Fizyka \-\- czasopisma. \[KABA\]] OR [Subject and Keywords = Geografia \-\- czasopisma. \[KABA\]] OR [Subject and Keywords = Geologia \-\- czasopisma. \[KABA\]] OR [Subject and Keywords = Matematyka \-\- czasopisma. \[KABA\]] OR [Title = Characteristic of Non\-linear Partial Differential Equations.] OR [Creator = Pliś, Andrzej]