Doug,
According to John Jackson, who has a major role in producing the new
Compendium, there are significant changes and updates to warrant
replacing the old edition. For more specific information you can email
him directly at: [log in to unmask]
K. Hutsell
Unio wrote:
>
> Regarding the Compendium: Are there are changes which would warrant those of
> us who own a previous edition purchasing the new one?
>
> Doug Shelton
> Alabama Malacological Research Center
> 2370-G Hillcrest Road #236
> Mobile, AL 36695