Gwyther, John Lionel.
An introduction to workshop processes / J. L. Gwyther, R. V. Page. - Harmondsworth : Penguin Books, c1968. - 243 p. : ill. - Penguin library of technology . - Penguin education X46. .
Machine-shop practice.
Metal-work
An introduction to workshop processes / J. L. Gwyther, R. V. Page. - Harmondsworth : Penguin Books, c1968. - 243 p. : ill. - Penguin library of technology . - Penguin education X46. .
Machine-shop practice.
Metal-work