A text book of physics ...
Duncan, John,M.I.Mech.E.
Starling, Sydney George.
London,
1948-1950.
Joint authors: John Duncan, M.I.Mech.E. and Sydney George Starling.
Includes pt. 4 and 5 only.
Each pt. has separate title page.
Title of pt. 4: Sound.
Title of pt. 5: Magnetism and electricity.