Introduction to systems thinking: walking the ideas and rethinking the way, by Enrique Herrscher, prefaced by J. Gharajedaghi. Published by Granica Ediciones, Buenos Aires, Argentina, 2003, 270 pp., ISBN 950 641 386 X, $18.85 (£12.00 approx.) (in Spanish) - Córdoba, José (Systems Research & Behavioral Science, 2004)