EN 27942:1993 Information Processing Systems - Computer Graphics - Graphical Kernel Systems (GKS) Functional Description (ISO 7942 : 1985 Including Amendment 1 : 1991)
1993EN 27942:1993 Information Processing Systems - Computer Graphics - Graphical Kernel Systems (GKS) Functional Description (ISO 7942 : 1985 Including Amendment 1 : 1991)
1986EN 27942:1986/AC1:1986 Information processing systems. Computer graphics. Graphical Kernel System (GKS); Functional description (ISO 7942-1985,1st edition, 1985-08-15)
1986EN 27942:1986 Information processing systems. Computer graphics; Graphical Kernel System (GKS); Functional description (ISO 7942-1985, 1st edition, 1985-08-15)