found: LC data base, 10-14-89(hdg.: Beron, Petŭr; MLC usage: Petŭr Beron)
found: Ent︠s︡ik. Bŭlgarii︠a︡, 1978- :v. 1, p. 269 (Beron, Petŭr; b. Oct. 1800; d. 3/21/1871)
found: Transformation de l'eau en minerais, 1868:t.p. (Pierre Béron)
found: Būkvarʹ sʺ razlichny poūchenīę, 1824:t.p. (собрани ωт Петра Х. Беровича = sobrani ōt Petra Kh. Berovicha)
found: Narodna biblioteka "Kiril i Metodii". Bŭlgarska vŭzrozhdenska knizhnina ("Stoi︠a︡nov"), 1957:v. 1, p. 13 (Beron (Khadzhi Berovich), d-r- Petŭr Atanasov... born around 1795 in Kotel... died (suffocated by evildoers) on Mar. 21, 1871 in Craiova)
found: Goli︠a︡ma ent︠s︡iklopedii︠a︡ Bŭlgarii︠a︡, 2011:v. 1, p. 250 (Beron, Petŭr (Petŭr Khadzhiberovich) (Oct. 1800--Mar. 21, 1871); born in Kotel, killed by a hired killer on his property near Craiova, Romania)
found: Panteon belezhiti deĭt︠s︡i na bŭlgarska kultura, 2010:v. 1, p. 80 (D-r. Petŭr Beron, 1795-1871; Medical doctor, educator, philosopher, physicist and mathematician. His father was called Bero, khadzhi Bero. At first he signed his name khadzhi Berov, khadzhi Berovich... his dissertation in Latin was signed Petrus hadzi Beron. His scientific work in French was signed Pierre Beron... born in Kotel in 1795.)
