Addendum no. 001 to the memorandum of understanding between the government of Sri Lanka and the International Irrigation Management Institute regarding the provision of the building at 127 Sunil Mawatha, Pelawatta, Thalangama South, Sri Jayawardenapura. Addendum signed on April 4, 1991, by Roberto Lenton for IIMI and A. A. Wijetunga for the Government of Sri Lanka. Addendum is in English.