Claybrook, Billy G. "FOL: A Language for Implementing File Organizations for Information Storage and Retrieval Systems"

[SIGPLAN] (1975) SIGPLAN Notices 10(01) January 1975 Proceedings of the 1973 SIGPLAN/SIGIR Interface Meeting, Gaithersburg, Md., Nov. 1973  

Languages mentioned FOL {1973} LPL {1973} List processing language