John Calvin / G.R. Potter and M. Greengrass. Potter, G. R. (George Richard), 1900- Greengrass, Mark, 1949- Calvin, Jean, 1509-1564. Reformation Biography. 284.20924 CAP Includes bibliographical references. New York : St. Martin's, 1983. 1983. 1983 Text xvi, 174 p. ; eng Documents of modern history