by G. Crisp, B.Sc., Ph.D., F.Z.S., F.R.E.S., Director, Entomological Unit British Empire Society for the Blind, with a foreword by Sir Stewart Duke-Elder, K.C.V.O., D.Sc., LL.D., M.D., F.R.C.S., Chairman, Medical Advisory Panel, British Empire Society for the Blind, Director of Research, Institute of Ophthalmology (University of London). 1st ed. 171 pages, illustrated. London, H. K. Lewis and Co., Ltd., 1956. £2.17.6d net
