[1]
Czyżewski, A. and Smędzik, K. 2010. Technical and environmental efficiency of farms in Poland in the years 2006-2008, according to their types and sizes. Annals of Agricultural Economics and Rural Development. 97, 3 (Oct. 2010), 61–71. DOI:https://doi.org/10.22630/RNR.2010.97.3.33.