Annual ACM symposium on principles of programming languages.Annual ACM symposium on principles of programming languages (8th : 1981 : Williamsburg, Va.).ACM,1981.
Annual ACM symposium on principles of programming languages.Annual ACM symposium on principles of programming languages (7th : 1980 : Neveda).ACM,1980.
Conference record of the 9th annual ACM symposium on principles of programming languages.Conference record of the 9th annual ACM symposium on principles of programming languages(1982 : New Mexico).ACM,1982.
