Communist China is a multi-national state with one majority nationality- the Han People. Its design is the erection of a gigantic monolithic state in which the national personality of minorities will be permanently crased and the Han dominance of a Communist empire will emerge unchallenged. Mr. Ghosh is not the first scholar who has been attracted by the difficulty and brutality of this struggle to create a collectivized society. Nor is he notably superior to his predecessors. The book's usefulness is such as derives from a highly readable study which presents the essential historical facts about the minority groups of Tibet, Mongolia, and Sinkiang- their religious and political movements from the 8th century B.C. to the present. The author's most individual contribution is his accurate description of the methods employed by the communists in accelerating this historical process of assimilation. Because of the role played by religion in the evolution of the minority groups, the intensive campaign against religion has particular importance. But the chapters lack any integral coherence, and the book emerges as simply a catalogue of facts and opinions about the areas of Tibet, Mongolia, and Sinkiang. It is not well enough organized to provide any sense of direction; it is not comprehensive enough for a work of reference.