Obaia Khaled Helmy
Obana Hiroshi
Oh Se-Heon
Ohio Machinery Co.
Ohio Machinery Company
Ohya Kazu
Okamoto Toyoyuki
Olin Research Center
Oliver Pujol Carlos
Oliver Y. Batlle, S.A.
Olson George R.
Olson Gerald R.
OMYA GmbH
Orlandi Tarcisio
Ott Klaus
Oy. Suomen Vanutehdas - Finnwad Ltd.