Witjes, S., Muñoz Specht, P. and Montoya Rodriguez, C. (2006) “The measurement of the development of systems and general thinking in agricultural areas of Colombia; preliminary results”, Proceedings of the 50th Annual Meeting of the ISSS - 2006, Sonoma, CA, USA, 00. Available at: https://journals.isss.org/index.php/proceedings50th/article/view/351 (Accessed: 20May2022).