Adam and Charles BlackBrand infoName:Adam and Charles BlackCountry:Activity:1807-NowProducts:Books (4)Explore all productsAll books »New releasesNo new releasesBooksDerek Piggott on GlidingDerek Piggott 1990 Understanding Gliding The Principles of Soaring Flight Derek Piggott 1977 Gliding A Handbook on Soaring Flight [4th edition] Derek Piggott 1976 British Gliders and Sailplanes 1922-1970 Norman Ellison 1971