Essential Senior Physics In Si Units - Light and Sound (1977) Front Cover Book Details Author A. H Ward Ward, E. H Subject Physics Publication Date 1977 Format Paperback (250 x 185 mm) Publisher Nelson Personal Details Index 71 Keep Yes Links Amazon US Amazon UK Product Details Dewey 530 ISBN 0175114994 Cover Price $1.45 Nr of Pages 128 First Edition No Rare No Notes I picked this up at a bookstore in Ghana.