cover image SC-Rivr Flows Uphill

SC-Rivr Flows Uphill

William H. Calvin, Sierra Club. Random House (NY), $18 (528pp) ISBN 978-0-87156-719-2

This is an account of a two-week river voyage through the Grand Canyonin the company of fellow scientistsand a vehicle for discoursing on earth history and evolution. ""Readers who enjoy adventure stories may discover they also enjoy good scientific writing,'' PW observed. (November)