Herbert Weldon Leach & George Carroll Beakley.
Elementary problems in engineering.
R642897. Elementary problems in engineering. By Herbert Weldon Leach & George Carroll Beakley. © 17Aug49; AA125233. Herbert Weldon Leach & George Carroll Beakley (A); 3Sep76; R642897.
Herbert Weldon Leach & George Carroll Beakley|A