TY - GEN AU - Oweis, Theib AU - Hachum, Ahmed AU - Kijne, Jacob TI - Water harvesting and supplemental irrigation for improved water use efficiency in dry areas SN - 9290903783 PY - 1999/// CY - Colombo PB - International Water Management Institute KW - WATER RESOURCES KW - IRRIGATION KW - WATER SUPPLY ER -