TY - BOOK AU - Kerf, M. AU - Gray. R.D AU - Irwin,T TI - Concessions for infrastructure: a guide to their design and awards SN - 9780821341650 AV - DUCE HC 79.C3.C66 PY - 1998/// CY - Washington PB - The World Bank N1 - includes bibliographical references and index ER -