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1ספריצא לאור 1999"...Organisation for Economic Co-operation and Development. Development Assistance Committee..."
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2ספריצא לאור 1998"...Organisation for Economic Co-operation and Development. Development Assistance Committee..."
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3ספריצא לאור 1991"...Organisation for Economic Co-operation and Development. Development Assistance Committee..."
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4ספריצא לאור 1988"...Organisation for Economic Co-operation and Development. Development Assistance Committee..."
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5ספריצא לאור 1981"...Organisation for Economic Co-operation and Development. Development Assistance Committee..."
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6ספריצא לאור 1981"...Organisation for Economic Co-operation and Development. Development Assistance Committee..."