Title: Trópico & problemas de conciliação do moderno com o ecológico-tropical, desenvolvimento industrial, valores tropicais de cultura ante o impacto desenvolvimentista, minerais, Maurício de Nassau, alguns naturalistas europeus, comemoração do Natal, gado caprino
Subjects: Brazilian National characteristics, Congresses, Economic conditions, Economic development, Social aspects of Economic development, Social aspects
Places: Brazil