Pirochta Dusan
Pittsburgh Metals Purifying Company
PMCMA Research Group
Prigent Serge
Produits Ballu-Schuiling S.A.
Pushpalal Game Kankanamge Dinilprem
Quraishi Mashallah M.
Ravins Thomas L.
Razumeev Jury A.
Razumeev Jury Alexeevich
Reed Edgar H.
Rem Metals Corporation
Rhee Chong K.
Richerson David W.
Robertson John R.
Rodder Karl-Martin
Romanus Arnaldo
Roti Rebecca
Sadahiro Suzuki
Sakai Chemical Industriy Co., Ltd.