http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Opportunities for academic research in a low-gravity environment
edited by George A. Hazelrigg, Joseph M. Reynolds.
Based on papers presented at a workshop held in Washington, D.C., July 10-11, 1985, sponsored by the National Science Foundation.
Research in reduced gravity environments
Progress in astronautics and aeronautics ; v. 108