"houghton, p s. "
Gears: spur,helical,bevel.../ P.S. Houghton" - 3 ed. - uk : technical pess 1970. - ", 0p.; 25 cm."
includes bibliography
TJ184 / .H62 1970
Gears: spur,helical,bevel.../ P.S. Houghton" - 3 ed. - uk : technical pess 1970. - ", 0p.; 25 cm."
includes bibliography
TJ184 / .H62 1970