Source: SK-BRsa Graduale Scepusiense Protoc. XIX Anni 1616-1619 28_SpGr_1616_1619_1r_alt.jpg 28_SpGr_1616_1619_1r_alt.jpg 28_SpGr_1616_1619_1v_alt.jpg 28_SpGr_1616_1619_1v_alt.jpg