http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
proceedings of the 161st Symposium of the International Astronomical Union, held in Potsdam, Germany, August 23-27, 1993
xxxii, 760 pages : illustrations ; 25 cm.
edited by H.T. MacGillivray [and others].
Includes bibliographical references and index.