00622nam a2200169Ia 4500 190328s9999||||xx |||||||||||||| ||und|| 97-37307 0-8213-4067-0 NITIL NITIL 21st 627.52088 I61P International Commission on Irrigation and Drainage (Washington, D C) Planning the management operations and maintenance of irrigation and drainage system a guide for the preparation of strategies and manuals Washington, D C ICID 1997 xi, 120p. Irrigation-Management; Drainage-Management. BKS 30130 30130 0 0 DDC 0 0 NITIL NITIL 2019-04-03 1 627.52088 I61P 139683 2020-05-21 00:00:00 2020-02-20 2019-04-03 BKS