2026-06-27http://hdl.handle.net/123456789/112506We use firm-level data from the World Bank’s Regional Program on Enterprise Development, covering Ghana, Kenya, Nigeria, and Tanzania for 1991–2003. Econometric results confirm well-known relationships, such as a positive association between export intensity and TFP, which implies that more productive firms are more likely to select in to exporting.application/pdfOpen Accesstradeproductivitymanufacturingexportstrade liberalizationWorking Paper