Grateful acknowledgment is made to the many individuals and organizations who have assisted in the successful completion of this audio-visual program and to its revision by providing photographs and to those who have provided valuable information and advice.

Organizations who provide assistance for the preparation of the first version include: International Water Management Institute (IWMI), Sri Lanka; International Rice Research Institute (IRRI), Philippines; Central Arizona Project, USA; Salt River Project, Arizona, USA; office regional de Mise en Valeur des Doukkala, Morocco; Alstom Atlantique, France; Canal de Provence, France; Colorado State University, Fort Collins, USA and all the personnel of the irrigation districts or agencies who provided most generous assistance during the field visits made by the author in Afghanistan, Egypt, India, Iraq, Iran, Mexico, Pakistan, USA, Dominican republic, Morocco, Tunisia, Senegal, Thailand and Vietnam, which comprise too many to list. A special mention is due however to Dr. Charles Burt, Chairman of the Irrigation Training Research Center (ITRC), California Polytechnic University, who provided continuous advice and prepared a first draft of the module on Centralized Control.

This second version was made possible through the renewed support of ITRC, Dr. C.Burt and S. Styles, Director, who invited the author to short courses on water measurements and SCADA and provided detailed materials. Mr. P. Rousset from the canal de Provence also provided further technical support. The following organizations have provided additional photographs: ARMTEC, Canada; RUBICON, Australia; Turlok Irrigation District, California; CEMAGREF, France