Master of Arts, University Bristol, England, 1963. Doctor of Philosophy, University Frankfurt am Main, 1963.
Subject specialist City and University Library., Frankfurt am Main, 1962—1969. Director Library. School, 1967—1969, Stuttgart, Germany, 1970—1980, Württemberg State Library., Stuttgart, 1970—1997, professor, since 2003. Honorary professor; consultant United Nations Educational, since 1971.
Chairman library associations and literature societies, Germany, since 1965.
Trustee Bibliotheca Alexandrina, Egypt. Member International Federation Library. Associations and Institutions (president 1985-1991).
European Foundation for Library. Cooperative (president 1991-1995). Honorary member numerous international library associations.
Married Roswitha Dieterich, August 31, 1968.