Spencer, Henry Cecil, 1903-
Basic technical drawing / Henry Cecil Spencer, John Thomas Dygdon. - [4th ed.] - New York : Macmillan, 1974. - 484 p. : ill.
Mechanical drawing.
Basic technical drawing / Henry Cecil Spencer, John Thomas Dygdon. - [4th ed.] - New York : Macmillan, 1974. - 484 p. : ill.
Mechanical drawing.