Solar energy thermal processes / John A. Duffie and William A. Beckman. Duffie, John A. Beckman, William A., joint author. Solar energy. Heat engineering. TJ810 .D8 621.47 DUS "A Wiley-Interscience publication." Includes bibliographical references. New York, Wiley [1974] [1974] 1974 Text xvii, 386 p. eng