%A Porat, Marc Uri
%A United States. Dept. of Commerce. Office of Telecommunications
%A National Science Foundation (U.S.)
%T Definition and measurement
%I U.S. Dept. of Commerce, Office of Telecommunications,For sale by the Supt. of Docs., U.S. Govt. Print. Off.
%D 1977
%S OT special publication
%V 77-12(1) . The information economy
%U https://ci.nii.ac.jp/ncid/BA35714040
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