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.

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Astronomy--Experiments.
Astronomical instruments.
Space sciences.

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