Impe, W.F.Van Soil improvement techniques and their evolution - Rotterdam A.A. Balkeman 1989 - 125 p ISBN: 9061918057 Subjects--Topical Terms: Civil Engineering LC Class. No.: 624.15136 IMP 1989 Dewey Class. No.: 624.15136 IMP 1989 National Library of Medicine Call No.: 624.15136 IMP 1989