Yazar
Georgi Lazarov
4 cilt bulundu.
Cilt sonuçları
Okhrana na truda vŭv vŭglishtnite rudnit͡s︡i
Georgi Lazarov · Nauchnoizsledovatelski institut po profsŭi͡u︡zni problemi G. Dimitrov pri T͡S︡S na BPS
71 sayfa · 1978
Coal mines and mining / Safety measures
Uslovii͡a︡ na trud i samoupravlenie
Georgi Lazarov · Profizdat
77 sayfa · 1988
Employee participation / Industrial hygiene / Industrial management / Industrial safety / Work environment