Usŭvŭrshenstvuvane stila i metodite na profsŭi͡uznata rabota v stolit͡sata po kachestvoto na truda, produkt͡sii͡ata i uslugite
Subtitle: rabotni materiali
By: [pod nauchnata redakt͡sii͡a, Dimitŭr Penchev].
Contributors: Penchev, Dimitŭr.
Publisher: [s.n.]
Published: 1984
Place of publication: Sofii͡a
Language: bul
Number of pages: 75