See Allo

Chaisson, Eric, author

Astronomy today

Prentice-Hall, 1999

Multimedia

Abell, George O., author

Exploration of the universe

Holt Rinehart and Winston, 1974

Buku Teks

Jefferys, William H., author

Discovering astronomy

John Wiley & Sons, 1981

Buku Teks

Robbins, Robert R., author

Instructor's manual to accompany Jefferys and Robbins: discovering astronomy

John Wiley & Sons, 1981

Buku Teks

Ahrens, L.H., author

Distribution of the element in our planet

McGraw-Hill, 1965

Buku Teks

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