Spirit of enterprise the 1981 Rolex Awards / edited by Gregory B. Stone ; foreword by Gerard Piel ; pref. by André J. Heiniger. Stone, Gregory B. Montres Rolex S. A. Inventions Awards. Science Awards. T49.5 .I48 504 21 STP This book presents 131 of the projects submitted to the Rolex Awards for Enterprise contest conducted by Montres Rolex S. A. in 1976. Includes index. San Francisco : W. H. Freeman, c1978. c1978. 1978 Text xxii, 360 p. : eng