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Čelen proizvodstven opit i vnedreni novosti
Pavlova, N. (contributor) - 1981
Persistent link: https://www.econbiz.de/10003103263
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Čelen proizvodstven opit ; 2
Nikolova, Galina; Tabakova, Nedežda; Ličev, Ličo; … - 1976
Persistent link: https://www.econbiz.de/10003109312
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Širok razmach na vsenarodnoto socialističesko sŭrevnovanie
Živkov, Todor - 1972
Persistent link: https://www.econbiz.de/10003042665
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Ergonomijata, iziskvanija i realizacija
Zlatanov, Zdravko - 1979
Persistent link: https://www.econbiz.de/10003044827
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Značenie, sǔstnost, faktori i rezervi
Janakiev, Rumen - 1974
Persistent link: https://www.econbiz.de/10003056396
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Selskostopanska ergonomija
Mirčev, Mirčo Aleksandrov - 1980
Persistent link: https://www.econbiz.de/10002503535
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Usŭvŭršenstvuvane zaplaštaneto na truda v selskoto stopanstvo
Rachnev, Aleksandŭr - 1970
Persistent link: https://www.econbiz.de/10002686526