Model Engineer - Vol. 147 - Issue: 3660 / 3rd - 16th July 1981

Model Engineer - Vol. 147 - Issue: 3649 / 16th - 31st January 1981

Model Engineer - Vol. 147 - Issue: 3667 / 16th - 31st October 1981

Model Engineer - Vol. 147 - Issue: 3655 / 17th - 30th April 1981

Model Engineer - Vol. 147 - Issue: 3659 / 19th - 30th June 1981

Model Engineer - Vol. 147 - Issue: 3665 / 18th - 30th September 1981

Model Engineer - Vol. 147 - Issue: 3666 / 2nd - 15th October 1981

Model Engineer - Vol. 147 - Issue: 3664 / 4th - 17th September 1981