The aim of Current Biography Yearbook 1991, like that of the preceding volumes in this series of annual dictionaries of contemporary biography, now in its sixth decade of publication, is to provide the reference librarian, the student, or any researcher with objective, accurate, and well- documented biographical articles about living leaders in all fields of human accomplishment the world over. Whenever feasible, obituary notices appear for persons whose biographies have been published in Current Biography, and every attempt is made to pick up obituaries that have inad- vertently been omitted in previous years.