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Marinus Adrianus Koekkoek II foto coll. Nationaal Natuurhistorisch Museum. Naturalis Leiden Nederland. de Marinus Adrianus Koekkoek der Jngere auch Marinus Adrianus Koekkoek II wegen Namensgleichheit mit seinem Grossonkel Marinus Adrianus Koekkoek der ltere oder Foto coll Nationaal NatuurhistorischMuseum Naturalis Leiden Nederland