3681-1966, . (1967). GENERAL PLAN FOR SPUR AND HELICAL GEARS. DELHI: ISI.
3681-1966, . 1967. GENERAL PLAN FOR SPUR AND HELICAL GEARS. DELHI: ISI.
3681-1966, . GENERAL PLAN FOR SPUR AND HELICAL GEARS. DELHI: ISI. 1967.