TY - BOOK ED - United States. TI - Strategic materials : : technologies to reduce U.S. import vulnerab ility PY - 1985/// CY - Washington, D.C. : PB - Congress of the U.S., Office of Technology Ass essment , KW - Strategic materials KW - Mineral industries KW - Government policy KW - United States N1 - Includes bibliographical references and index ER -