A very good set in lightly worn slipcase of the first UK edition. This book aims to bring together in one work all the available knowledge on the diurnal birds of prey of the world. All the Diurnal Birds of Prey in 125 Full-color paintings by Roger Tory Peterson, J.C. Harrison, Don R. Eckelberry, David Reid-Henry, Albert Earl Gilbert, C.E. Talbot Kelly, Guy Coheleach, Lloyd Sandford, Malcolm Ellis, Cornelius J. Ward, and J.G. Williams. Maps. Two volumes in slipcase. The brown binding preferred by Dean Amadon (pers com).