Use constraints: Data can be used freely given that the sources are cited.

The objective of the Balthazar project was to assess the potential sources of nutrient loading from all types of large animal farms in the Kaliningrad and Leningrad regions and to perform risk assessment of nutrient leaching from the livestock farms into Baltic Sea. Report on large scale agricultural waste management activities: http://www.helcom.fi/stc/files/Publications/OtherPublications/agricultural_full_english.pdf