00607nus0 22001933i 450 SBL020164220251003044350.019910930a19..9999||||0itac50 bausbzu||||||||Research papersUniversity of Chicago, Department of geographyChicagoUniversity of Chicago, Department of geography.University <Chicago> : Department of geographySBLV107458ITIT-00000019910930IT-NA0079 SBL0201642 01 BN CRResearch Papers1837093UNISANNIO