Published in Bollettino Malacologico, in 1993, in volume 29, pages 65-80

Published in Bollettino Malacologico, in 1993, in volume 29, issue 1-4, pages 17-30

Published in Bollettino Malacologico, in 1993, in volume 29, issue 1-4, pages 31-44

Published in Bollettino Malacologico, in 1993, in volume 29, issue 1-4, pages 45-48

Published in Bollettino Malacologico, in 1993, in volume 29, issue 1-4, pages 95-96

Published in Bollettino Malacologico, in 1993, in volume 29, issue 1-4, pages 102-104

Published in Bollettino Malacologico, in 1993, in volume 29, issue 5-8, pages 109-209

Published in Bollettino Malacologico, in 1993, in volume 29, issue 5-8, pages 115-138

Published in Bollettino Malacologico, in 1993, in volume 29, issue 5-8, pages 139-146

Published in Bollettino Malacologico, in 1993, in volume 29, issue 5-8, pages 147-172

Published in Bollettino Malacologico, in 1993, in volume 29, issue 5-8, pages 173-180

Published in Bollettino Malacologico, in 1993, in volume 29, issue 5-8, pages 181-190

Published in Bollettino Malacologico, in 1993, in volume 29, issue 5-8, pages 191-200

Published in Bollettino Malacologico, in 1993, in volume 29, issue 5-8, pages 201-209