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- 73325409 contributor B2329472.
- 73325409 contributor B2329473.
- 73325409 created "1972.".
- 73325409 date "1972".
- 73325409 date "1972.".
- 73325409 dateCopyrighted "1972.".
- 73325409 description "Includes bibliographical references.".
- 73325409 extent "55 p.".
- 73325409 issued "1972".
- 73325409 issued "1972.".
- 73325409 language "bul".
- 73325409 publisher "(Sofii︠a︡) Profizdat,".
- 73325409 spatial "Bulgaria.".
- 73325409 subject "HC407.B93 L37".
- 73325409 subject "Labor productivity Bulgaria.".
- 73325409 title "Rastezhŭt na obshtestvenata proizvoditelnost na truda--glavno strategichesko napravlenie [v razvitieto na narodnoto stopanstvo].".
- 73325409 type "text".