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The tangled web : leadership and change in Southern Africa
Rensburg, Arrie P. van, (1977)
Angola under the Portuguese : the myth an the reality
Bender, Gerald J., (1978)
Angola
Wheeler, Douglas L., (1971)
Luanda, cidade portuguesa fundada por Paulo Dias de Novais em 1575
Dias de Novais, Paulo, (1952)
Monitoring Colombia's Children Wellbeing
Aguado, Luis F., (2007)