1. Geotrends :
پدیدآورنده : sponsored by the Geo-Institute of the American Society of Civil Engineers ... [et al.] ; edited by Christoph M. Goss ... [et al.].
کتابخانه: Center and Library of Islamic Studies in European Languages (Qom)
موضوع : Earthwork-- Colorado, Congresses.,Engineering geology-- Colorado, Congresses.
