EXHIBIT A

                        DIRECTORS AND EXECUTIVE OFFICERS

The names of the  President,  the Fellows and the executive  officers of Harvard
and their business addresses and present principal  occupation or employment are
set forth below. If no business  address is given,  the business address of such
director or  executive  officer is c/o Harvard  Management  Company,  Inc.,  600
Atlantic Avenue, Boston, Massachusetts 02210.

          PRESIDENT, FELLOWS AND EXECUTIVE OFFICERS OF HARVARD COLLEGE

          Name                                       Office/Position
          ----                                       ---------------
          Lawrence H. Summers                        President
          D. Ronald Daniel                           Treasurer
          Mark Goodheart                             Secretary
          Hanna H. Gray                              Fellow
          Conrad K. Harper                           Fellow
          James R. Houghton                          Fellow
          Robert E. Rubin                            Fellow
          Robert D. Reischauer                       Fellow










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