Valenzuela, C.R.2007-11-121985-04-012007-11-121985http://hdl.handle.net/10625/7268ThesisThesis, Purdue University, 1985Text1 digital file (156 p.)application/pdfenINFORMATION SYSTEMSELECTRONIC DATA PROCESSINGPHYSICAL GEOGRAPHYSOIL SURVEYSMAPPINGSPATIAL ANALYSISElement soil as a basic component in a digital geographic information systemThesis