TY - BOOK AU - Inteernational bank for Reconstruction and Development and Hidronor S A Hidroelectrica. Norpatagonica Sociedad Anonima ED - Inteernational bank for Reconstruction and Development and Hidronor S A Hidroelectrica. Norpatagonica Sociedad Anonima TI - Agreement amending loan agreement 1949 : El Chocon power project U1 - "X755:(Z,3), H9.58-1/UN" PY - 1973/// CY - New PB - York International Bank for Reconstruction and Development U KW - Foreign Loan ER -