30 anos de 25 de Abril : um retrato estatístico / Instituto Nacional de Estatística
Marketscope for telecom expense management / Eric Goodness...[et al.]
Is informal normal? Towards more and better jobs in developing countries / ed. by Johannes P. Jütting, Juan R. de Laiglesia
Perspectivas económicas na África [documento electrónico] : síntese / Organisation for Economic co-Operation and Development