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Economic efficiency of photovoltaic installations : (a case study at the Zwierzyniec–Biały Słup Research and Education Centre of Roztocze National Park)
Gradziuk, Piotr - In: Barometr regionalny : analizy i prognozy 12 (2014) 4, pp. 117-122
Persistent link: https://www.econbiz.de/10010511510
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Foreign trade of biomass for energy purposes in Poland in the years 2008-2014
Gradziuk, Barbara; Gradziuk, Piotr - In: Barometr regionalny : analizy i prognozy 13 (2015) 3, pp. 153-159
Persistent link: https://www.econbiz.de/10011515083
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The potential of straw for energy purposes in Poland
Gradziuk, Piotr - In: Barometr regionalny : analizy i prognozy 12 (2014) 1, pp. 15-22
Persistent link: https://www.econbiz.de/10010411228
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Economic and ecological efficiency of solar systems : a case study at the Gorzków and Rudnik communes
Gradziuk, Piotr; Gradziuk, Barbara - In: Barometr regionalny : analizy i prognozy 14 (2016) 3, pp. 179-185
Persistent link: https://www.econbiz.de/10011593242