North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Technical Information Panel. Specialists' Meeting (1991 : Instituto Nacional de Industria, Madrid, Spain)
North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Technical Information Panel. Specialists' Meeting (1989 : Brussels, Belgium)
Ad-Hoc Forum of Scientific and Technical Information Analysis Center Managers, Directors, and Professional Analysts (1st : 1965 : Battelle Memorial Institute)