XI INTERNATIONAL CONGRESS ON ELECTRON MICROSCOPY 1986 日本

SECOND ANNUAL CONFERENCE OF THE KUAIT MEDICAL ASSOCIATION 1976 クエート

SECOND ANNUAL CONFERENCE OF THE KUAIT MEDICAL ASSOCIATION 1976 クエート

SECOND ANNUAL CONFERENCE OF THE KUAIT MEDICAL ASSOCIATION 1976 クエート

FIRST EM STAMP 1966 中華人民共和国

FIRST EM IN NO. AMERICA 1988 カナダ

A. KLUG - NOBEL PRIZE WINNER 1982 スエーデン