The geometry of discrete groups=离散群几何
Alan F. Beardon2011 年出版340 页ISBN：7510037559
The Demography of Racial and Ethnic Groups
Frank D.Bean1978 年出版321 页ISBN：0120836505
THE POLITICS OF INTERESTS:INTEREST GROUPS TRANSFORMED
MARK P.PETRACCA1992 年出版421 页ISBN：0813310016
THE CHEMISTRY OF THE NITRO AND NITROSO GROUPS PART 1
HENRY FEUER1969 年出版771 页ISBN：
Graduate Texts in Mathematics Fundamentals of the Theory of Groups
2222 年出版203 页ISBN：3540903968
