TY - BOOK AU - Greenstein,Shane TI - Universal service in the digital age : the commercialization and geography of us Internet access AV - HD30.37 G733U PY - 1998/// CY - Cambridge, Mass. PB - National Bureau of Economic Research KW - INTERNET MARKETING KW - UNITED STATES KW - COMMERCIAL GEOGRAPHY KW - ECONOMICS KW - RESEARCH ER -