Testing the Effects of ISO Certification on Firm Productivity Differences Across Global Sub-Regions: Is There a Productivity Gap in Sub-Saharan Africa?
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2019 ◽
Vol 11
(1)
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pp. 75-90
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2017 ◽
Vol 19
(2)
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pp. 210-226
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2012 ◽
Vol 25
(7)
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pp. 912-935
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2018 ◽
Vol 55
(9)
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pp. 2065-2082
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