"Ruhlen is a leader in the new attempt to unify the theory of language development and diffusion."––Library Journal "A powerful statement...also a wonderfully clear exposition ...

"Ruhlen is a leader in the new attempt to unify the theory of language development and diffusion."––Library Journal "A powerful statement...also a wonderfully clear exposition ...

But more than simply describing his and his colleague's theories, Dr. Ruhlen invites you to share in the joys of discovery. He arms you with the linguist's basic tool kit and ...