Sbornik s izmenenii︠a︡ i dopŭlnenii︠a︡ na deset pravilnika po bezopasnostta na truda, 1991-1992
Publisher: Izd-vo "IKO"
Published: 1993
Place of publication: Sofii︠a︡
Language: bul
Number of pages: 58
Subjects: Industrial safety; Law and legislation; Industrial hygiene