Returns from a speculation2008-05-011 PRE AI RRon Johnston *DDerek Gregory GGeraldine Pratt MMichael R. Watts DOI:10.1016/j.geoforum.2007.10.018OriginalOriginal request for helpShareSaveAbstract En 中文 A reply to a recent paper by Setten. (C) 2007 Elsevier Ltd. All rights reserved.