Crossing frontiers : gerontology emerges as a science / W. Andrew Achenbaum. Achenbaum, W. Andrew. Gerontology United States History. HQ1064.U5 A625 1995 305.26 20 ACC Includes bibliographical references and index. New York : Cambridge University Press, 1995. 1995. 1995 Text xiii, 278 p. ; http://www.loc.gov/catdir/description/cam026/94047972.html http://www.loc.gov/catdir/toc/cam025/94047972.html eng United States