Makarewicz, Artur, Anna Płaza, Barbara Gąsiorowska, and Milena A. Królikowska. 2014. “The Content of Protein in Potato Tubers Fertilized With Undersown Catch Crops in Integrated and Organic Production Systems”. Bulletin of Plant Breeding and Acclimatization Institute, no. 271 (March):79-89. https://doi.org/10.37317/biul-2014-0043.