Dawson Richard F.
Dct Double-Cone Technology Ag
Dick Samuel
Diedeman Ronald W.
Dill Frederick H.
Doak Lyle E.
Donetsky Ordena Trudovogo Krasnogo Znameni Politekhnichesky Inst
Dorfler Peter
Doubinski Anatoli
Dukes Jon W.
Dwight L. Hopper
Canada
World
United States