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Annals of Public and Cooperative Economics > 95 > 2 > 573 - 594
Roczniki Dziejów Społecznych i Gospodarczych > 2023 > 84 > 297-331
Agricultural Engineering > 2015 > Vol. 19, No. 2 > 57--63
Journal of Ecological Engineering > 2015 > Vol. 16, nr 3 > 139--142