Данные об изобретательской и рационализаторской деятельности в Эстонской ССР за период 1971-1975 гг.
Technical data
URL: http://www.digar.ee/id/nlib-digar:616185
ViewAvailable at the authorised workplace in the National Library of Estonia, Archival Library of the Estonian Literary Museum, Tallinn University of Technology Library, University of Tartu Library and Academic Library of Tallinn University
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URL: http://www.digar.ee/id/nlib-digar:616185
