Analysis of information sources in references of the Wikipedia article "نابرابری اقتصادی" in Persian language version.
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: نگهداری یادکرد:استفاده از پارامتر نویسندگان (link)The result is that America is one of only three advanced countries that spends more on richer pupils than poor ones, according to the OECD (the other two are Turkey and Israel)
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