The Space Flight of Belka and Strelka. Moscow 20 cm. 30 p. (1960) So I am not sure about the title but basically this pamphlet is building on the successful flight of Belka and Strelka. It has a short history of space flight and a number of nice paintings about Russia's future in space.
This lovely oddity seems to be a book for Argentinian publisher Editorial Sigmar (Buenos Aires), that was perhaps translated from a Japanese book. Hombres En La Luna. Tetsushi Okamoto and Kenya Murano. Illustrations by takashi Yorimitsu. Gakken Co. Ltd, Tokio. 32 p. 29 cm. 1970.
I really like this fanciful illustrations of what you could do if you were on the moon.
And as usual there are some nice paintings of what our future moon base, and moon, Mars, and Venus exploration was going to look like.
Respond Martians. By Klushancev. USSR. 1976 This is a reprint/updating of a 1968 Russian book I have blogged about before in 2015. http://dreamsofspace.blogspot.com/2015/08/respond-martians-1968-part-1.html Our understanding of Mars changed a lot in that short time so this book updated the illustrations and added some photographs of new probes.