TY - BOOK TI - Key technologies for the 21st century SN - 0716729482 (soft cover) AV - T173.8 .K49 1996 U1 - 601/.12 20 PY - 1996/// CY - New York PB - W.H. Freeman KW - Technological innovations N1 - On t.p.: Scientific American, a special issue; Includes bibliographical references (p. [161]-163) and index ER -