Apfel, Necia H.
Astronomy and planetology / by Necia H. Apfel. - New York : Franklin Watts, 1983. - 122 p. : ill. - Projects for young scientists .
Gives instructions for building or making theodolites, sundials, telescopes, spectroscopes and times for observing the sun, moon, etc.
83003476
Astronomy--Experiments.
Astronomical instruments.
Space sciences.
522
Astronomy and planetology / by Necia H. Apfel. - New York : Franklin Watts, 1983. - 122 p. : ill. - Projects for young scientists .
Gives instructions for building or making theodolites, sundials, telescopes, spectroscopes and times for observing the sun, moon, etc.
83003476
Astronomy--Experiments.
Astronomical instruments.
Space sciences.
522