Need text on genetic diseases/disorders

[Virtual Biologist]

I'm looking for a book that lists genetic disorders along with their
etiologies and possibly discussion of treatment, locus of the problem,
testing, etc.

I would think such a book would be available in the form of a reference
for genetic councilors and medical researchers.

Please e-mail or post any references.
Title, Author or Editor, and ISBN # would be extremely helpful.

-Thanks,
James