Duffie, John A. Solar energy thermal processes/ John A. Duffie and William A. Beckman - New York: John Wiley Pub, c1947 - 386 p.: ill., maps.; 23 cm. Includes index ISBN: 0471223719 $ 36.95 Subjects--Topical Terms: Solar energyHeat engineeringSolar thermal energy Dewey Class. No.: 621.47