Vetero - Pragae, Udalrici Grbl, 1771. 92 pp. Small 8vo (10 x 16,5 cm.). Contemporary grey wrappers (some slight imperfections), uncut. With two woodcut vignettes and one folded engraved plate.
Thesis. A very rare Prague imprint of which only one other copy is recorded (the NLM's). There are several references to van Leeuwenhoek and his microscopic blood cells observations. -- (some scattered light foxing).