Zdravoslovni i bezopasni uslovii︠a︡ na trud
Edition: 2. izd.; kŭm 18 maĭ 2007
Series: Poredit︠s︡a Dzhobni izdanii︠a︡
Publisher: Sibi
Published: 2007
Place of publication: Sofii︠a︡
Language: bul
Number of pages: 242
ISBN-13: 9789547304321