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Depletion of soil fertility due to decrease in soil organic matter content represents a considerable problem in both developed and undeveloped countries. This paper deals with the comparison of compost (Cp) and mineral nitrogen fertilizer (NF) application on selected soil parameters which indicate state of soil environment, its health and quality. The main objectives of this study were (a) to investigate influence of Cp and NF application on total nitrogen (TN) and carbon (TC) content in soil (b), to determine pos...

Our paper presents the newest results of bathymetric measurements and underwater objects investigation on the fragment of Narew river between Granary and Modlin Fortress. The historical fortress and the Granary founded by the Polish Bank are both well-known historical places in Poland. Archaeologists and historians are still analyzing the history of these buildings. The main objective of the work was to elaborate a bathymetric map and a database of underwater objects. The necessary data for elaborations was collec...