Athanasius Kircher. The Selenic Shadowdial or the Process of the Lunation, Ars Magna Lucis et Umbrae (The Great Art of Light and Shadow). 1646.
Athanasius Kircher. The Selenic Shadowdial or the Process of the Lunation, Ars Magna Lucis et Umbrae (The Great Art of Light and Shadow). 1646.