| Call Number (LC) | Title | Results |
|---|---|---|
| NAS 1.21:488 | Atlas of Comet Halley 1910 II | 1 |
| NAS 1.21:489 | Arctic sea ice, 1973-1976 : satellite passive-microwave observations | 1 |
| NAS 1.21:490 | Into the thermosphere : the atmosphere explorers | 1 |
| NAS 1.21:491 | Sapping features of the Colorado Plateau : a comparative planetary geology field guide | 2 |
| NAS 1.21:492 | The M-type stars | 1 |
| NAS 1.21:493 | Reflectance spectroscopy in planetary science review and strategy for the future | 1 |
| NAS 1.21:494 | Time variable phenomena in the Jovian system : proceedings of the Workshop on Time-Variable Phenomena in the Jovian System, Lowell Observatory, Flagstaff, Arizona, 15-27 August 1987 | 1 |
| NAS 1.21:495 | Advanced turboprop project | 1 |
| NAS 1.21:497 | O stars and Wolf-Rayet stars | 1 |
| NAS 1.21:498 | Planetary geosciences--1988 | 1 |
| NAS 1.21:500 | Exobiology in earth orbit : the results of science workshops held at NASA Ames Research Center | 1 |
| NAS 1.21:501 | Powered-lift aircraft technology | 2 |
| NAS 1.21:501/2 | Selected welding techniques | 1 |
| NAS 1.21:502 | FGK stars and T Tauri stars | 2 |
| NAS 1.21:503 | Surface topography of the Greenland ice sheet from satellite radar altimetry | 2 |
| NAS 1.21:503/MAPS | Surface topography of the Greenland ice sheet from satellite radar altimetry | 1 |
| NAS 1.21:504 | Space shuttle avionics system | 2 |
| NAS 1.21:507 | Cataclysmic variables and related objects | 3 |
| NAS 1.21:508 |
Planetary geosciences, 1989-1990 Planetary geosciences--1989-1990 |
2 |
| NAS 1.21:509/OVERVIE | Space resources | 1 |