Keywords: M polokrizova.jpg polokřížová střecha - schéma vlastní kresba Transferred from http //cs wikipedia org cs wikipedia; transferred to Commons by User Podzemnik using http //tools wikimedia de/~magnus/commonshelper php CommonsHelper 2007-02-28 Petr Kurfürst Original uploader was Petr Kurfürst at http //cs wikipedia org cs wikipedia Released into the public domain by the author cs wikipedia Petr Kurfürst original upload log page cs wikipedia M_polokrizova jpg 2007-02-28 12 37 Petr Kurfürst 400×278× 10727 bytes <nowiki> povolení public domain jiné verze </nowiki> Drawings of roofs Valleys roofing |