Asimov, Isaac, MASA DEPAN DI ANGKASA / ISAAC ASIMOV ; Editor: Barbara J. Behm - 32 pages : color illustrations, color photographs ; 26 cm - Perpustakaan Penjelajahan Angkasa . - Perpustakaan penjelajahan angkasa . ISBN: 9679147037 Subjects--Topical Terms: Space--Juvenile literature Dewey Class. No.: 523.1