Python's predecessor. Interactive language, environment for personal computing, originally intended as replacement for BASIC. Designed by first doing task analysis of programming. Home site, description, code samples, downloads, contact. http://homepages.cwi.nl/~steven/abc/
By Leo Guerts, Lambert Meertens, Steven Pemberton; Prentice Hall, 1991, ASIN 0130000272. Full details of language, implementations; many sample programs. [Amazon.com] http://www.amazon.com/exec/obidos/ASIN/0130000272