Zeller, Simon. Principles of obstetrics. 8 Bl., 206 S. With a pale copper panel. 19 x 11 cm. Leather d. C. (breathed, with scratch marks on the RDeck, upper chapter missing, lower chapter with worm veins) with gold-embossed RSchild and gold-plated. Vienna, Rudolph Gräffer, 1781. Blake 498. Deer 6, 363. – First edition. The obstetrician Simone Zeller (1746-1816) was raised to the nobility in the birthplace of St. Marx for his bold reforms, "whose main principle was to allow nature to function as long as this was possible without disadvantage" (Hirsch). – Front inner joint open, title with hs. Possession note, slightly finger- and damp-spotted – the same. Comments on some items from the practical delivery. 1 Bl., XLV, 1 Bl, 108 pp., 2 Bl. With 2 folded copper plates. Vienna, Johann David Hörling, 1789.