TY  - BOOK
ED  - International commission on Irrigation and drainage                                                                                                                                                                                                            . 
TI  - Planning the management, operation and maintenance of irrigation and drainage systems: A guide for the preparation of strategies and manuals 
U1  - 028.75631 
PY  - 1989///
CY  - Washington D.C : 
PB  - World Bank , 
ER  -