Published in American Malacological Bulletin, in 1991, in volume 8, issue 2, pages 97-106

Published in American Malacological Bulletin, in 1991, in volume 8, issue 2, pages 131-137

Published in American Malacological Bulletin, in 1991, in volume 8, issue 2, pages 143-144

Published in American Malacological Bulletin, in 1991, in volume 8, issue 2, pages 147-153

Published in American Malacological Bulletin, in 1991, in volume 8, issue 2, pages 155-163

Published in American Malacological Bulletin, in 1991, in volume 9, issue 1, pages 1-20

Published in American Malacological Bulletin, in 1991, in volume 9, issue 1, pages 21-25

Published in American Malacological Bulletin, in 1991, in volume 9, issue 1, pages 27-38

Published in American Malacological Bulletin, in 1991, in volume 9, issue 1, pages 39-42

Published in American Malacological Bulletin, in 1991, in volume 9, issue 1, pages 43-102

Published in American Malacological Bulletin, in 1991, in volume 9, issue 1, pages 45-58

Published in American Malacological Bulletin, in 1991, in volume 9, issue 1, pages 59-67

Published in American Malacological Bulletin, in 1991, in volume 9, issue 1, pages 69-74

Published in American Malacological Bulletin, in 1991, in volume 9, issue 1, pages 75-80

Published in American Malacological Bulletin, in 1991, in volume 9, issue 1, pages 81-84

Published in American Malacological Bulletin, in 1991, in volume 9, issue 1, pages 85-88

Published in American Malacological Bulletin, in 1991, in volume 9, issue 1, pages 89-98

Published in American Malacological Bulletin, in 1991, in volume 9, issue 1, pages 99-102