Boulind, Henry Frederick The teaching of physics in tropical secondary schools / Henry Frederick Boulind - London : Oxford University Press, 1957 - xxii, 394 p. : ill, diagrs. ; 23 cm. - UNESCO handbooks on the teaching of science in tropical countries ; v. 8 . Includes index Subjects--Topical Terms: Physics--Study and teaching (Secondary) Dewey Class. No.: 373.2453