archivolt of ciborium of San Giorgio in Valpolicella, Italy
Arthur Kingsley Porter (1883 – 1933)
2011-11-14
Medieval architecture: its origins and development, with lists of monuments and bibliographies, Volume 1 <a rel="nofollow" class="external autonumber" href="https://books.google.com/books/download/Medieval_architecture.pdf?id=FTQAAAAAYAAJ&amp;hl=en&amp;capid=AFLRE70Pe-0IqT107QXUVw2E6UJewhKOvWUSJ8d3tzmjonNsNDGTK5OaQmUmFX60L0yLKcyWzvhgTw3kXsAnj211hS80jZqXfQ&amp;continue=https://books.google.com/books/download/Medieval_architecture.pdf%3Fid%3DFTQAAAAAYAAJ%26output%3Dpdf%26hl%3Den">[1]</a>