Book Reviewed in this article:Resources in America's Future. Patterns of Requirements and Availabilities, 1960–2000. By Hans H. Landsberg, Leonard L. Fischman, and Joseph L. Fisher.Contributions to Urban Sociology, edited by Ernest W. Burgess and Donald J. Bogue.An Anatomy of Kinship: Mathematical Models for Structures of Accumulated Roles, by Harrison C. White.Essays On The Structure of Social Science Models, by Albert Ando, Franklin M. Fisher, and Herbert A. Simo