Advances in computeraided manufacture : proceedings of the 3rd International IFIP/IFAC Conference on Programming Languages for Machine Tools, PROLAMAT 76, Stirling, Scotland, 1518 June, 1976 - McPherson, D (NorthHolland Pub. Co. ; distributors for the U.S.A. and Canada, Elsevier/NorthïHolland, 1977)