Petdnevnata rabotna sedmitsa i NOT
Subtitle: materiali po vŭvezhdaneto i prilaganeto na petdnevna rabotna sedmitsa
Contributors: Koev, Dimitur; Vankov, Georgi
Edition: 1. izd. --
Publisher: Partizdat
Published: 1974
Place of publication: Sofiia
Language: bul
Number of pages: 162
Subjects: Hours of labor -- Bulgaria
Notes: Bibliography: p. 160.