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Sylvia Okkerse: Switzerland,Valais
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Sylvia Okkerse: Switzerland,Valais
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Sylvia Okkerse: Valais,Suisse,1989
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Sylvia Okkerse: Switzerland,Valais
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Sylvia Okkerse: Switzerland,Wallis
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Sylvia Okkerse: Valais,Wallis in autumn
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Sylvia Okkerse: mountain lake
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Sylvia Okkerse: Valais,Wallis