SYMBOLANG - Lapidus & Goldstein, 1965. Symbol manipulating FORTRAN
subroutine package for IBM 7094, later CDC6600. "Some Experiments in
Algebraic Manipulation", CACM 8:501-508 (1965).
SYMBOLANG Programming Language
http://www.programming-languages.co.uk/symbolang.html
Large list of computer programming languages arranged alphabetically, with explanations.