Long, F. A. (1980). Appropriate technology and social values: A critical appraisal.
Lua i Stíl Chicago (17ú heag.)Long, Frank A. Appropriate Technology and Social Values: A Critical Appraisal. 1980.
Lua MLA (9ú heag.)Long, Frank A. Appropriate Technology and Social Values: A Critical Appraisal. 1980.
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