Few children can visualize a trip to Moscow. Even fewer will penetrate the vast wonders of the Soviet East. Kathleen Taylor has apparently done both and in this worthwhile survey of the ""mosaic of nationalities"" that make up the Soviet people, the diversities in climate and scenery, the seemingly boundless melting pot of legendary cultures. She devotes separate chapters to Leningrad, the ""Venice of the North"", and the ""golden Ukraine"", and throughout, children are her heroes and heroines, for it is their lives she speaks of -- how they attend school, where they spend their holidays, where they live. Sixteen photographs add to the general pleasure of a serious minded, unpolitical introduction to an unknown but increasingly vital land.