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Incoming Resources
- Meteors and meteorites, by Gregory L. Vogt ; consultant, Ralph Winrich
- Space mission patches, by Gregory L. Vogt
- Uranus, by Gregory L. Vogt ; consultant Ralph Winrich
- Constellations, by Gregory L. Vogt
- Asteroids, by Gregory L. Vogt ; consultant, Ralph Winrich
- Disasters in space exploration, Gregory L. Vogt
- Jupiter, by Gregory L. Vogt ; consultant Ralph Winrich
- Pluto, by Gregory L. Vogt ; consultant Donald M. Scott
- John Glenn's return to space, Gregory Vogt
- Comets, by Gregory L. Vogt ; consultant, Ralph Winrich
- Saturn, by Gregory L. Vogt ; consultant Ralph Winrich
- Space stations, by Gregory L. Vogt
- Stars, by Gregory L. Vogt
- Vogt, Gregory, Earth's spheres
- Solar system, Gregory Vogt
- The solar system, by Gregory L. Vogt
- Earth's core and mantle, heavy metal, moving rock, Gregory L. Vogt
- Solar system, by Gregory Vogt
- The Milky Way, by Gregory L. Vogt
- Space laboratories, Gregory Vogt
- Neptune, by Gregory L. Vogt ; consultant Ralph Winrich
- Meteorology in the real world, by Gregory Vogt
- Space robots, by Gregory L. Vogt
- Asteroids, comets, and meteors, by Gregory Vogt
- Living on other worlds, by Gregory Vogt
- Rockets, by Gregory L. Vogt