http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Global matrix of thermospheric density values for selected solar/geomagnetic conditions and spacecraft orbital altitudes
National Aeronautics and Space Administration.
Scientific and Technical Information Branch,
1 online resource (iv, 87 pages) : illustrations.
GPO Cataloging Record Distribution Program (CRDP).
Includes bibliographical references (page 4).