TY - BOOK AU - Toffler, Alvin. TI - Powershift: knowledge, wealth , and violence at the edge of the 21st century SN - 0553057766 PY - 1990/// CY - New York PB - Bantam Books KW - Economic history-1945 KW - sears KW - Power KW - Social sciences KW - Social change KW - Social history-1945 N1 - Includes bibliographical references and index ER -