Columbia subject headings:
I︠A︡vorov, Peĭo K. (Peĭo Kracholov), 1878-1914--Criticism and interpretation.
I︠A︡vorov, Peĭo K. (Peĭo Kracholov), 1878-1914. Correspondence. Selections.
Harvard subject headings:
I︠A︡vorov, Peĭo K. (Peĭo Kracholov), 1878-1914--Criticism and interpretation.
I︠A︡vorov, Pei︠u︡ Kracholov, 1878-1914 Correspondence. Selections.
Princeton subject headings:
I︠A︡vorov, Peĭo K. (Peĭo Kracholov), 1878-1914--Correspondence.
I︠A︡vorov, Peĭo K. (Peĭo Kracholov), 1878-1914--Criticism and interpretation.