Albers, J. C.; Martens, E. von. (1860). <i>Die Heliceen nach natürlicher Verwandtschaft systematisch geordnet von Joh. Christ. Albers</i>. Ed. 2. Pp. i-xviii, 1-359. Leipzig: Engelman [original manuscript of Albers edited and published by Martens]. , available online athttps://www.biodiversitylibrary.org/page/11648540 page(s): 87 [details]
original descriptionAlbers, J. C.; Martens, E. von. (1860). <i>Die Heliceen nach natürlicher Verwandtschaft systematisch geordnet von Joh. Christ. Albers</i>. Ed. 2. Pp. i-xviii, 1-359. Leipzig: Engelman [original manuscript of Albers edited and published by Martens]. , available online athttps://www.biodiversitylibrary.org/page/11648540 page(s): 87 [details]