@inproceedings{sgem2019s21024,
  title = {ECONOMIC AND AGRICULTURAL FACTORS DETERMINING PRODUCTIVITY IN DEVELOPED COUNTRIES},
  author = {Katarzyna Grotkiewicz},
  booktitle = {SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 19th International Multidisciplinary Scientific GeoConference SGEM2019, Ecology, Economics, Education and Legislation},
  year = {2019},
  pages = {187-194},
  publisher = {STEF92 Technology},
  doi = {10.5593/sgem2019/5.3/s21.024}
}