http://lattes.cnpq.br/9318421520419728; MICHELETTI, Vladimir Domingos. (BrasilCentro de Humanidades - CHPÓS-GRADUAÇÃO EM ECONOMIA RURAL E REGIONALUFCGUniversidade Federal de Campina Grande, 1991-02)
In general, we can say that work is a relationship between man and nature. When the object that man works has been worked by another previously, we call it raw material and not nature. This relationship has the purpose of ...