[1]
Gradziuk, P. 2015. Economic Efficiency of Photovoltaic Installations (A Case Study at the Zwierzyniec–Biały Słup Research and Education Centre of Roztocze National Park). Regional Barometer. Analyses & Prognoses. 12, 4 (Feb. 2015), 117–122. DOI:https://doi.org/10.56583/br.989.