Pravila i normi po tekhnicheska bezopasnost i okhrana na truda v pŭtnoto stroitelstvo
By: Okrŭzhno pŭtno upravlenie--Sofii͡a ; [sŭstavil Ganka Stoi͡anova].
Contributors: Stoi͡anova, Ganka.
Publisher: OPU
Published: 1978
Place of publication: Sofii͡a
Language: bul
Number of pages: 201
Subjects: Railroads -- Bulgaria -- Safety measures.; Railroads -- Health aspects -- Bulgaria.