Robertson, R. G.
Descriptive geometry / R.G. Robertson. - 2nd ed. - Melbourne : Sir Isaac Pitman, 1966. - viii, 136 p.: ill.
Geometry, Descriptive.
Descriptive geometry / R.G. Robertson. - 2nd ed. - Melbourne : Sir Isaac Pitman, 1966. - viii, 136 p.: ill.
Geometry, Descriptive.