Pravilnik po bezopasnostta na truda v grazhdanskata aviat͡s︡ii͡a︡ v 05-04-01
By: [pravilnikŭt e sŭstaven ot kolektiv v sŭstav Tonko Petkov (rŭkovoditel) ... et al.].
Publisher: Izdadeno chrez Iko-Inform
Published: 1989
Place of publication: Sofii͡a︡
Language: bul
Number of pages: 133
Notes: PRIORITY 3.