"houghton, p s. "
"gears:spur,helical,bevel,internal,epicyclic and worm: / p.s. houghton" - 1 ed. - uk : technical press 1952. - ", 0p.; 26 cm."
includes bibliography
hard cover
--
621. 83 hou
"gears:spur,helical,bevel,internal,epicyclic and worm: / p.s. houghton" - 1 ed. - uk : technical press 1952. - ", 0p.; 26 cm."
includes bibliography
hard cover
--
621. 83 hou