Twelfth Congress on Irrigation & Drainage-Fort Collins (1984) Transactions - International Commission on Irrigation and Drainage New Delhi 1984 - 865p. ILL., Cht.,Fig and Table - Volume-I(B) Question-39 . Nat. Bib. No.: 5369 Subjects--Topical Terms: Engineering Universal Decimal Class. No.: 626.81 / TWE