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Programming Languages 
Introduction to Programming Languages Programming Languages: Application and Interpretation
Dictionary of Programming Languages Computer Languages History
Programming Languages (S.F. Smith) [Mirror] Syntax and Semantics of Programming Languages
How Language Works (M. Gasser) Computing Natural Language
Language, Proof and Logic (J. Barwise, J. Etchemendy) Implementing Functional Languages: A Tutorial
Advanced Programming Language Design Practical Computer Language Recognition and Translation
Advanced Programming Language Features for Executable Design Patterns [PostScript]
Semantics with Applications (H. R. Nielson & F. Nielson) Partial Evaluation and Automatic Program Generation
Language Translation Using PCCTS and C++ (T. J. Parr) Programming Languages Quick Reference Cards