Criminy, Art!

Do you buy all of your books new? Don't you haunt the used book dealers?
(That's USED BOOK dealers, Art, not used BOOKDEALERS, just to forestall the
obvious pun. You aren't getting off that easily!)

Andrew
+++++++++++++
Dear Andrew;-
    If seeing no copy in a lifetime is considered rare, one might call it :
out of print! Translating that to shells, our term is: extinct!
    But then, I'm just the Question Man. You and others are responsible for
the answers.
        Art
"Andrew K. Rindsberg" wrote:

Well, Art, bookdealers consider a book to be 'rare' if they see one copy or
less in a lifetime. Would that do as a numerical measure for shells?
Andrew K. Rindsberg
Geological Survey of Alabama