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

Model Engineer - Vol. 134 - Issue: 3359 / 20th - 31st December 1968

Model Engineer - Vol. 134 - Issue: 3351 / 16th - 31st August 1968

Model Engineer - Vol. 134 - Issue: 3355 / 18th - 31st October 1968

Model Engineer - Vol. 134 - Issue: 3354 / 4th - 17th October 1968

Model Engineer - Vol. 147 - Issue: 3657 / 15th - 31st May 1981

Model Engineer - Vol. 139 - Issue: 3471 / 17th - 31st August 1973

Model Engineer - Vol. 135 - Issue: 3361 / 17th - 31st January 1969