Declension of the word "petroleumquelle"

Singular and plural for Petroleumquelle, f, female declension     

Singular
Plural
Singular
Nominativ (Wer? Was?)
die Petroleumquelle
die Petroleumquellen
Genitiv (Wessen?)
der Petroleumquelle
der Petroleumquellen
Dativ (Wem?)
der Petroleumquelle
den Petroleumquellen
Akkusativ (Wen? Was?)
die Petroleumquelle
die Petroleumquellen
Plural
die Petroleumquellen
der Petroleumquellen
den Petroleumquellen
die Petroleumquellen
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