The case of Peru provides an instructive example as Barbara Kotschwar, Theodore Moran, and Julia Muir have shown.

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Brazil provides an instructive example of what can be done.

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Japan is an instructive example.

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Or take a current, perhaps more frivolous but no less instructive, example: coffee.

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It is instructive to compare, for example, the various Saint Sebastians he painted over the years.

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Yet the Wal-Mart example is additionally instructive because it shows how much progress such companies have made since 2007 in their investor relations and communications with activist shareholders.

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Germany's example is especially instructive: Although the state's family policies are now among the most generous in Europe -- a parent who stays home with a child receives 67% of his or her current net income for up to 12 months -- they have failed to boost the birthrate or reverse the figures for childless women.

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