Technical change and employment / Roy Rothwell and Walter Zegveld ; foreword by Christopher Freeman. Rothwell, Roy. Zegveld, Walter. joint author. Technological unemployment Congresses. Labor supply Congresses. HD6331 .R63 1979 331.11 ROT includes index. Bibliography: p. 171-173. New York : St. Martin's, 1979. 1979. 1979 Text ix, 178 p. : eng