1. P.P.4735.bb, vol 3, no 22(189b) Reference (shelfmark): P.P.4735.bb, vol 3, no 22(189b) Title: Insecten-Flügel. (Mikrotipie). Trypeta alternata. Photographer: Heeger, Ernst Scope & Content: Genre: Scientific Photography Photomicrograph of the wing of a fly. Collection Area: Printed Collections Languages: Not applicable Date Range: c 1856 Extent: 1 item