Mode of access: Internet from the NTRS web site. Address as of 11/25/08: http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19890015496%5F1989015496.pdf ; current access is available via PURL.
Action Note
committed to retain. Federal Depository Library Program (FDLP). For information on our retention commitment, please contact Microforms and Government Information.