Sedemdeset pet godini filatelno dvizhenie v Bǔlgariia.
Contributors: Dechev, Boris,
Publisher: [Izd. na Organizatsionniia komitet za chestvuvane na 75-godishninaga na filatelnogo dvizhenie v Bǔlgariia]
Published: 1968
Place of publication: Sofiia
Language: bul
Number of pages: 102
Subjects: Postage-stamps -- Collectors and collecting -- Bulgaria