@book{bhlpg13032241, title = {Malacologia }, volume = {v.3 (1965-1966)}, url = {https://www.biodiversitylibrary.org/page/13032241}, publisher = {Institute of Malacology]}, author = {Institute of Malacology. }, year = {1965}, pages = {Page 191}, } @book{bhlpg13129486, title = {Malacologia }, volume = {v.34 (1992)}, url = {https://www.biodiversitylibrary.org/page/13129486}, publisher = {Institute of Malacology]}, author = {Institute of Malacology. }, year = {1992}, pages = {Page 23}, }