TY - BOOK T1 - Planning for an irrigation system. LA - English PP - Georgia PB - American Association for Vocational Instructional Materials YR - 1980 ED - 2nd ed. UL - https://ds.mainlib.upd.edu.ph/Record/UP-99796217602799124 OP - 120 CN - TC 805 P63 1980 SN - 0914452444 KW - Irrigation engineering. ER -