Description
Item Description:Description based on: 1999.
Latest issue consulted: 2000.
Microform.
Physical Description:volumes : illustrations ; 28 cm.
Some issues also available via Internet at the NASA web site. Address as of 3/11/04: http://gnctech.gsfc.nasa.gov/live/What%5E20We%5E20Do/End%5E20Of%5E20Year%5E20Report.asp?proxyid=0&xsection=7; current access is available via PURL.
Publication Frequency:Annual