(1997). Oslo manual: : proposed guidelines for collecting and interpreting technological innovation data. Paris: OECD.
Παραπομπή Chicago StyleOslo Manual: : Proposed Guidelines for Collecting and Interpreting Technological Innovation Data. Paris: OECD, 1997.
Παραπομπή MLAOslo Manual: : Proposed Guidelines for Collecting and Interpreting Technological Innovation Data. Paris: OECD, 1997.
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