INTERPAKS, In: B.R. Crouch and S. Chamala (eds.), Extension education and rural development, Vol. 2, International experience in strategies for planned change. Chichester, UK: John Wiley, 1981. p. 221-235, Considers six Indian states as case studies to highlight key principles of the T&V system and its introduction into the field system. Discusses deficiencies in traditional extension services, details of the organizational structure of the T&V systems which overcome such deficiencies, and the method used to monitor and evaluate T&V extension projects.