@Book{1072732068, author="Williams, Peter J.", title="Canadian investigations on soil erosion", series="Nachrichten der Akademie der Wissenschaften zu G{\"o}ttingen, Mathematisch-Physikalische Klasse 1963,18", year="1963", publisher="Vandenhoeck {\&} Ruprecht", address="G{\"o}ttingen", note="Peter John Williams", language="English" }