http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Proceedings of the Summer School Held, 14-26 August, 1972 at the Banff Centre, Banff, Alberta
Proceedings of the Summer School, held August 14-26, 1972, at the Banff Centre, Banff, Alberta, Canada
Astrophysics and Space Science Library, A Series of Books on the Recent Developments of Space Science and of General Geophysics and Astrophysics Published in Connection with the Journal Space Science Reviews, ; 38