00417nam a2200133Ia 4500008004100000020001800041040001700059082002900076100001600105245010200121260003400223300001000257650001600267190327s9999||||xx |||||||||||||| ||und||  a81-7169-681-3  aNITILcNITIL  221sta338.1620954bD533T  aDhawan, B D 0aTechnological change in Indian irrigated agricultureba study of water saving methodscB D Dhawan  aNew DelhibCommonwealthc2002  a330p.  aAgriculture