http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Intercorrelated satellite observations related to solar events
proceedings of the 3rd ESLAB/ESRIN Symposium held in Noordwijk, The Netherlands, September 16-19, 1969
Astrophysics and space science library ; v. 19