Lifeway leap: the dynamics of change in America Luther P. Gerlach and Virginia H. Hine. Gerlach, Luther P. Hine, Virginia H., joint author. Social change. 301.24 GEL "Supplementary audio-visual material": p. 317. Includes bibliographical references and index. Minneapolis, University of Minnesota Press : 1973. 1973. 1973 Text 332 p. ; eng United States Social conditions 1960-1980.