Weisheipl, James A. The development of physical theory in the Middle Ages. - New York, Sheed and Ward [1960, c1959] - Philosophy of science series . LCCN: 60012880 /L/r85 Subjects--Topical Terms: Physics -- History.--Physics -- History. LC Class. No.: QC7 / .W37 Dewey Class. No.: 530.902