TY - BOOK AU - Karalis, E. A AU - Refsgaard, J. C TI - Operational water management : proceedings of the European Water Resources Association conference, Copenhagen, Denmark, 3-6 September 1997 SN - 9054108975 U1 - 558.26 REF PY - 1997/// CY - Rotterdam PB - A. A. Balkema N1 - Includes bibliographical references and index ER -