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1Conference Proceeding LiburuaArgitaratua 1972“...International Conference on Social Welfare...”
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2Conference Proceeding LiburuaArgitaratua 1970“...International Conference on Social Welfare...”
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3Conference Proceeding LiburuaArgitaratua 1974“...International Conference on Social Welfare...”
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4Conference Proceeding LiburuaArgitaratua 1972“...International Conference on Social Welfare (16th...”
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5Conference Proceeding LiburuaArgitaratua 1971“...International Conference on Social Welfare Manila, Philippines...”
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6Conference Proceeding LiburuaArgitaratua 1979“...International Conference on Social Welfare, 19th, Jerusalem...”
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7Conference Proceeding LiburuaArgitaratua 1975“...International Conference on Social Welfare (17th : Nairobi, Kenya)...”