May, E. R. The theory and practice of controllable pitch propellers / E. R. May. - London : Inst. of Marine Engineers, 1981. - 25 p. : ill. ; 21 cm. - Marine engineering practice. Vol. 2, pt 13 . ISBN: 0900976624 9780900976629 Subjects--Index Terms: Variable pitch propellers. Dewey Class. No.: 623.872361 / COM