Stopa, Roman Stopa, Roman The evolution of click sounds in some African languages The evolution of click sounds in some African languages - Krakow Krakow Nkladem Universytetu Jagellionskiego Nkladem Universytetu Jagellionskiego 1860 1860 - 102p. 102p. 25cm. 25cm. Subjects--Topical Terms: Bushman languagesBushman languages LC Class. No.: PL8101.S68 PL8101.S68