00307nam a2200121Ia 4500082002500000100002100025245003600046260003400082300002000116490003900136500000500175700000500180  a309.1002851bH891.SA  aHuggett, Richard  aSystems analysis in geographyb  aOxfordbClarendon Pressc1980  aix, 208p. Index  aContemporary problems in Geography  a  a