Advances in manufacturing technology. proceedings of the Seventh National Conference on Production Research /
National Conference on Production Research(7th :1991 :Hatfield, Herts.)
Spurgeon, Derek.
Apampa, Olunfunso.
Consortium of Heads of University and Polytechnic Production Engineering Departments.
Hatfield Polytechnic.
Hatfield : Hatfield Polytechnic,
1991.