TY - BOOK AU - Blazek,Ron AU - Perrault,Anna H. TI - United States history: a selective guide to information sources SN - 0872879844 PY - 1994/// CY - Englewood, Colo. PB - Libraries Unlimited KW - Reference books KW - United States KW - History KW - Bibliography KW - CD KW - ROM books KW - Data bases KW - Catalogs N1 - includes bibliographical references and index ER -