000			01093cam a2200157ua 4500
003			OSt
008			220219b ||||| |||| 00| 0 eng d
082			_a627.5 _bAWA/DR
245			_aDrainage Manual : A Water Resources Technical Publication
250			_a1 /
260			_aNew Delhi : _bOxford & IBH Publishing Company , _c1978.
300			_a286 ; .
500			_aA guide to integrating plant, soil, and water relationships for drainage of irrigated lands.
505			_a1 INTRODUCTION 2 BASIC DATA 3 FIELD AND LABORATORY PROCEDURES A . IN-PLACE HYDRAULIC CONDUCTIVITY TESTSBELOW A WATER TABLE B. IN-PLACE HYDRAULIC CONDUCTIVITY TESTSABOVE A WATER TABLE C. LABORATORY TESTS FOR HYDRAULIC CONDUCTIVITY. D. OBSERVATION HOLES AND PIEZOMETERS 4 DRAINAGE INVESTIGATIONS 5 DESIGN AND CONSTRUCTION A. SPACING OF DRAINS B. INTERCEPTOR DRAINS. C.OPENDRAINS D. PIPE DRAINS E. SPECIAL DRAIN TYPES F. INVESTIGATION AND LAYOUT FOR DRAINS . 6 OPERATION AND MAINTENANCE OF DRAINAGE SYSTEMS 7 SPECIAL DRAINAGE PROBLEMS
942			_cREF
999			_c5892 _d5892