TBDSCHEL, F. H. Das Gebiss der Schnecken. 

 Vol. 1. 



1856 Pt, 1, pp. 1-72 - Plates 1-4 



1857 " 2 " 73-112 " 5-8 



1858 " 3 " 113-152 " 9-12 

 1861 " 4 " 153- 1S6 " 13- IG 

 1865 " 5 " 197-252 " 17-20 



