. . "Ivanovich" . . "Petr"@en . "P." . "Piotr Iwanowicz Koeppen" . "P. I. Köppen" . "Petr Keppen"@en . "http://www.wikidata.org/entity/Q6581097" . "P. v. Köppen" . "V." . "von" . "Peter Keppen" . . . "Peter Von Köppen" . "Peter ˜vonœ" . "Peter ˜vonœ Köppen" . "Peter v." . "P. v" . "Piotr Iwanowicz" . "Köppen" . "P. v. Köppen" . "v." . "Petr Ïvanovïç Keppen" . "Petr Ivanovyč" . "Кёппен, Пётр Иванович" . "Peter V. Köppen" . "Keppen"@en . . "1793-03-02" . "Peter von Köppen" . "Peter von KOEPPEN" . "Петр Кеппен" . "Petro Ivanovych" . "Peter von Köppen"@en . "Peter ˜vonœ Koeppen" . "Peter von Keppen" . "Петр Кеппен" . "P. v. Koeppen" . "Peter von" . "Peter I. Keppen" . "Petr Keppen" . . "Von Köppen" . "Petr Ivanovič Keppen"@cs-CZ . "Petro Ivanovych Keppen" . . "Peter V. Koeppen" . . "P. v." . "I." . "P. v. Koeppen" . "Peter Keppen" . "پەتر ىيۆانوۆىيتش كەپپەن" . "Petr I. Keppen"@de-DE . "Peter v Koeppen" . "Петр Иванович Кеппен" . "Peter von Koeppen" . "Кеппен" . "Петр" . "P. v Köppen" . "P van Koppen" . "Кеппен Петро Іванович" . . "Ivanovič" . . "Petr Ivanovich" . "KOEPPEN" . "Köppen, Petr Ivanovich, graf" . "P. I." . . "Peter Ivanovič" . "P. von Keppen" . "Peter Koppen" . "Petr Ivanovič Keppen" . . "Peter Ivanovič Koeppen" . "Petr Ivanovič" . "P. v Koeppen" . . "Peter" . "graf Petr Ivanovich Köppen" . "1864-06-04" . "I" . "Koppen" . "Petr Ivanovich Köppen" . "Koeppen" . "P" . "Peter v. Koeppen" . "Peter Köppen" . "Peter von Koeppen"@pl-PL . "Peter Köppen" . . "P. v. Koppen" . "Peter v" . "P I Keppen" . "P. von Köppen"@nl-NL . "Petr Ivanovyč Keppen" . "Peter v. Koeppen" . "van" . "Piotr Köppen" . "P. I. Keppen" .