Title: Pidpilʹna poshta Ukraïny
Description: Марки Украинской подпольной почты. Иллюстрированный каталог
Subjects: Politics and government, On postage stamps, Ukrainians, Catalogs, Commemorative postage stamps
Places: Ukraine, Foreign countries
People: Stepan Li︠u︡bomyr Rykhtyt︠s︡ʹkyĭ (1921-1983)