na INLIS000000000000826 Ind 0010-1118000826 Report on soil information systems of the USDA natural resources conservation service EFFLAND, William R. William R. Effland Taipei F.F.T.C. 2008 37 p.: ills.; 26 cm.-- 37 p.: ills.; 26 cm.-- Sr.631.6.02:007 Bibl.: p.37 631.6.02:007 NATURAL RESOURCES SOIL CONSERVATION SOIL MANAGEMENT INFORMATION SYSTEM 820/MS/2012-mfn1403 820/MS/2012-mfn52293