He became one of the principal developers of the eastern suburbs of London.

George Moreland Stamps, also mentioned above, is a principal developer of the modern fax machine.

Luc Anselin is one of the principal developers of the field of spatial econometrics.

He has been one of the principal developers of the theory of geometric quantization.

In this role it interacts with principal developers and users of research, including private and public laboratories, universities, corporations and governments.

It is even more unusual because its principal developer is the Natural Resources Defense Council, a prominent environmental group.

"We've got our ducks in a row," said Harley Baldwin, the principal developer.

"Harlem, in my opinion, is the gateway to Manhattan," said Michael Caridi, one of the principal developers.

Barry Smith is perhaps the principal developer of this field, and has also developed the related topic of naïve physics.

He is the author of the weblog hunch.net and the principal developer of Vowpal Wabbit.