GOVT OF INDIA
CONVENTIONAL REPRESENTATION OF GEARS ON TECHNICAL DRAWINGS - 1ST - NEW DELHI BUREAU OF INDIAN STANDARDS 1987 - 7 NA
53371
NA
NA
621.8
CONVENTIONAL REPRESENTATION OF GEARS ON TECHNICAL DRAWINGS - 1ST - NEW DELHI BUREAU OF INDIAN STANDARDS 1987 - 7 NA
53371
NA
NA
621.8
