BS DC Import ID node:52482 BS DC Import Time 2024-07-11 22:36 Sums and Differences 1978 © VG Bild-Kunst, Bonn 2014 Title Sums and Differences Year 1978 Category Video Format Analog video Material / Technique U-Matic, b/w, mono Dimensions / Duration 00:08:25 Images © VG Bild-Kunst, Bonn 2014