a quien pueda concernir angolul

to whom it may concern▼(phrase used to begin a formal letter to an unknown recipient)
phrase
[UK: tuː huːm ɪt meɪ kən.ˈsɜːn] [US: ˈtuː ˈhuːm ˈɪt ˈmeɪ kən.ˈsɝːn]