Sobczak, Antoni Krzysztof. “Selected Issues of the Investment Process Implementation in Historic Buildings on the Example of the Castle of the Dukes of Mazovia in Ciechanów”. Protection of Cultural Heritage, no. 6 (November 29, 2018): 177–190. Accessed April 28, 2024. https://ph.pollub.pl/index.php/odk/article/view/884.