Requested reference
Hahn, C. W. (1820). Monographie der Spinnen. Lechner, Nürnberg, Heft 1, pp. 1-16, 4 pls. doi:10.5962/bhl.title.122225 
-- Show included taxa
Hahn, C. W. (1820). Monographie der Spinnen. Lechner, Nürnberg, Heft 1, pp. 1-16, 4 pls. doi:10.5962/bhl.title.122225 -- Show included taxa