Proceedings of Workshop on Data Abstraction, Databases, and Conceptual Modelling, Pingree Park, Colorado, June 23-26, 1980 - Brodie, Michael L. (Association for Computing Machinery ; May be ordered from ACM Order Dept, 1980)
On cover: SIGART newsletter, no. 74, Jan. 1981; SIGMOD record, v. 11, no 2, Feb. 1981; SIGPLAN notices, v. 16, no. 1, Jan. 1981, special issue.