Model Engineer - Vol. 147 - Issue: 3648 / 2nd - 15th January 1981

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

Model Engineer - Vol. 147 - Issue: 3663 / 21st - 31st August 1981

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

Model Engineer - Vol. 147 - Issue: 3671 / 18th - 31st December 1981

Model Engineer - Vol. 147 - Issue: 3661 / 17th - 31st July 1981

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

Model Engineer - Vol. 147 - Issue: 3653 / 20th - 31st March 1981