ばいちょ(売価調査)、価格比較とネットでのお買い物を楽に

内容説明 The River Scene is a uniquely stimulating guide to the appreciation and preservation of rivers. In this highly illustrated account， Sylvia Haslam presents a new scheme for the evaluation of river quality which can be used by a wide range of users， from amateur conservationists to water-management professionals. The book presents an overview of river ecology， looking first at the natural environment - river structure， classification and pollution. This is followed by a discussion of the cultural environment， the importance of which is often overlooked: the history， archaeology， and social and legal contexts of rivers. Dr Haslam is a leading international authority on rivers and their vegetation. By understanding the natural and cultural environments of rivers and applying the methods she describes， our awareness and appreciation of these beautiful resources can be greatly enhanced， and their conservation for the future aided.