TY - BOOK AU - Brynjolfsson, Erik (ed) AU - Kahin, Brian (ed) TI - Understanding the digital economy: Data, tools and research SN - 0-262-02474-8 U1 - 330.9/BRY PY - 2000/// CY - Cambridge PB - MIT Pr KW - Electronic commerce KW - General economics KW - Economics ER -