21. Annual procurement report Author/Creator: United States. National Aeronautics and Space Administration Publication/Creation: [Washington, D.C.] : National Aeronautics and Space Administration Resource Type: Journal, Newspaper or Serial Access & Availability: Loading
22. The Aphrodite Terra region of Venus in four map sheets Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : For sale by USGS Information Services Resource Type: Map Access & Availability: Loading
23. The Apollo 11 telemetry data recordings : a final report Author/Creator: United States. National Aeronautics and Space Administration, author Publication/Creation: [Washington, D.C.] : National Aeronautics and Space Administration, [2009?] Resource Type: Book Access & Availability: Loading
24. Apollo 15 : in the mountains of the moon Publication/Creation: Washington, D.C. : NASA ; Boulder, CO : Media Design Associates, distributor, [1971] Resource Type: Video or Visual Material Access & Availability: Loading
25. Apollo 16 : nothing so hidden Publication/Creation: Washington : NASA : distributed by National Audiovisual Center, 1979, p1972 Resource Type: Video or Visual Material Access & Availability: Loading
26. The "Apollo" of aeronautics : NASA's Aircraft Energy Efficiency Program, 1973-1987 Author/Creator: Bowles, Mark D. Publication/Creation: Washington, DC : National Aeronautics and Space Administration, 2010 Resource Type: Book Access & Availability: Loading
27. Applications of space flight in materials science and technology Publication/Creation: Washington : Dept. of Commerce, National Bureau of Standards, National Measurement Laboratory, Center for Materials Science : for sale by the Supt. of Docs., U.S. Govt. Print. Off, 1978 Resource Type: Book Access & Availability: Loading
28. Applications with weather satellites II : 9-11 November, 2004, Honolulu, Hawaii, USA Publication/Creation: Bellingham, Wash. : SPIE, ©2005 Resource Type: Book Access & Availability: Loading
29. Ask : Academy Sharing Knowledge Publication/Creation: [Washington, D.C.] : NASA, [2000?]-2013 Resource Type: Journal, Newspaper or Serial Access & Availability: Loading
30. An assessment of balance in NASA's science programs Author/Creator: Committee on an Assessment of Balance in NASA's Science Programs Corporate Author Publication/Creation: Washington, DC : National Academies Press, c2006 Resource Type: Book Edition: 1st ed. Access & Availability: Loading