Green Bryn Countryside conservation The protection and management of amenity ecosystems Green Bryn - London Allen and Unwin U K 1981 - xii,249p. Bib p. 232-44 cm. - Resoruce Management . 3 . ISBN: 0047190019 Source: General Book Subjects--Topical Terms: Modern - Geography Dewey Class. No.: U:(G:5), M1