. . "Mihajlovič" . "Khovratovich, B. (Boleslav)" . "Boleslav Mikhajlovich" . "B. Khovratovich" . "Khovratovich" . "Boleslav Mikhajlovich Khovratovich" . . "Hovratovič" . "Boleslav Mihajlovič Hovratovič"@pl-PL . "B." . "1921" . "Boleslav Hovratovič" . "Boleslav" . . "Boleslav Khovratovich" . . "B. Hovratovič" .