Sindicato de Trabalhadores Rurais de Xapuri (STR Xapuri), Projeto Seringueiro, Instituto de Estudos Socioeconmicos (INESC), Conselho Nacional dos Seringueiros da Amazonia, Brazil: first national rubber tappers' meeting in 1985 to discuss initiatives for sustainable rainforest management; rubber tappers' Land Needs Survey; second meeting of the National Rubber Tappers Council in 1986, 1985-1988