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Abstract
Contents: General; Bibliography; Costs; Districts; Ditches and canals; Experiments and investigations; Financing; Groundwater control; History; Irrigated lands; Laws; Machinery; Maintenance; Marsh lands; Public health; Pumps and pumping plants; Rainfall and runoff; Specifications; Statistics; Structures; Surveying; Tables and calculations; Underground (General, Mole drainage, Tile drainage); Albania; Argentina; Arizona; Arkansas; Australia; Austria; Belgium; Bohemia; Brazil; British Guiana; Bulgaria; California; Canada; Ceylon; China; Colombia; Colorado; Corsica; Cuba; Dutch East Indies; Egypt; Federated Malay states; Finland; Florida; France; Georgia; Germany; Great Britain; Greece; Hawaiian Islands; Honduras; Idaho; Illinois; India; Indiana; Iowa; Ireland; Italy; Jamaica; Japan; Java; Kansas; Kentucky; Louisiana; Maine; Maryland; Massachusetts; Mexico; Michigan; Minnesota; Mississippi; Mississippi valley; Missouri; Montana; Nebraska; Netherlands; Nevada; New Jersey; New Mexico; New York; New Zealand; North Carolina; North Dakota; Norway; Ohio; Oklahoma; Oregon; Pennsylvania; Philippine Islands; Poland; Puerto Rico; Russia; Scotland; Siam; South Africa; South Carolina; South Dakota; Southern states; Southwestern states; Spain; Sweden; Switzerland; Tennessee; Texas; United States; Utah; Venezuela; Virginia; Wales; Washington; West Virginia; Western states; Wisconsin; Wyoming; Author index.