Iain C. Walker
G. Guyot
Energy and Environmental Analysis, inc.
American Gas Association.
Walworth Manufacturing Co
Unknown Author
Gulf South Research Institute.
Petr Ivanovich Gapich
Corby G. Anderson
United States International Trade Commission
Pŏm-yong Sŏng
Duhamel du Monceau M.
M. Du hamel du Monceau
Lead Lined Iron Pipe Co