Oparin, A.
The universe
Foreign Languages Publishing House, 1960
Buku Teks
Nicolson, Iain
The universe
Horus Editions, 1995
Buku Referensi
Abell, George O.
Exploration of the universe
Holt Rinehart and Winston, 1974
Buku Teks
Exploration of the universe
Buku Teks
Koupelis, Theo
In quest of the universe
Jones & Bartlett learning, 2011
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