Also available via Internet from the NTRS web site. Address as of 06/09/09: http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19890015445%5F1989015445.pdf ; current access is available via PURL.
Microfiche. [Washington, D.C. : National Aeronautics and Space Administration], 1989. 1 microfiche.