00602nam a2200193Ia 4500 CTU_40048 210402s9999 xx 000 0 und d 631 F218/N59 Nicola Lamaddalena FAO irrigation and drainage paper N59 Performance analysis of on-demand pressurized irrigation systems Nicola Lamaddalena, FAO, J A Sagardoy Rome FAO 2000 drainage,irrigation Nguyễn Quang Điền, 001221 Trung tâm Học liệu Trường Đại học Cần Thơ