Sto godini sŭobshtenii͡a ; Sedemdeset i pet godini Profsŭi͡uz
Subtitle: materiali v pomosht na uchastnit͡site vŭv viktorinata
By: T͡Sentralen komitet na Profsŭi͡uza na rabotnit͡site ot sŭobshtenii͡ata.
Publisher: T͡Sentr. kom-t na Profsŭi͡uza na rabotnit͡site ot sŭobshtenii͡ata
Published: 1979
Place of publication: Sofii͡a
Language: bul
Number of pages: 92
Subjects: Telecommunication -- Bulgaria -- History.; Postal service -- Bulgaria -- History.
Other titles: Sedemdeset i pet godini Profsŭi͡uz.