Classification problems of selected soil profiles from North-Sumatra (Indonesia) according to the USDA soil Taxonomy system text Ghent The stale university of ghent 1986 Ind iv, 97 p.: ill.; 29 cm. iv, 97 p.: ill.; 29 cm. Thesis- (Dr). The state university of ghent, 1986 ADIWIGANDA, Mamat Rachmat SOIL STRUCTURE NORTH SUMATRA 631.44 631.44ADIc INLIS000000000011318 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)