Crimean Tatars have been in the news recently, e.g., in the Guardian article "Crimea's Tatars Fear the Worst as it Prepares for Referendum." The UNPO (Unrepresented Nations and Peoples Organization) site has information about Crimean Tatars.
An example of a history book about the Crimean Tatars is Beyond Memory: The Crimean Tatars' Deportation and Return. The book is classed in 947.7100494388 Crimean Tatars in Crimea.
How was that number built? At 930-990 History of specific continents, countries, localities; extraterrestrial worlds is the main add note for building history numbers: "Add to base number 9 notation T2--3-T2--9 from Table 2, e.g., general history of Europe 940, of England 942, of Norfolk, England 942.61; then add further . . . . "
Notation from Table 2 for Crimea is T2—4771 Crimea province (Krymskai͡a oblastʹ).
In the add table under 930-990 at notation 0041-0049 Specific ethnic and national groups is the add note: "Add to 004 notation T5--1-T5--9 from Table 5, e.g., history and civilization of North American native peoples in New York 974.700497."
Notation from Table 5 for Crimean Tatars is T5—94388 Crimean Tatars.
See also earlier blog post about building numbers for history of Ukraine.
A work that emphasizes the interaction of nationalism and migration in shaping group identity is The Crimean Tatars: The Diaspora Experience and the Forging of a Nation. It is classed in the number for social aspects of Crimean Tatars as an ethnic group: 305.894388 Crimean Tatars—social aspects. How was the number built? At 305.81-305.89 Specific ethnic and national groups is the add note: "Add to base number 305.8 notation T5--1-T5--9 from Table 5, e.g., comprehensive works on Jews 305.8924, Chinese 305.8951, Chinese Australians 305.8951094, Inuit 305.89712." Hence the number was built with base number 305.8 plus notation T5—94388 Crimean Tatars. The instruction at the start of Table 5 about adding zero plus area notation was not followed because the diaspora is widespread.