ROCHA, Clarice Oliveira da.; GADELHA, Antônio José Ferreira.; VIEIRA, Fernando Fernandes.; RIBEIRO, George do Nascimento. (BrasilUFCGUniversidade Federal de Campina Grande, 2009)
Water is a natural resource essential to life. The water, which should be a gift of nature, is
being compromised. Every day that passes our quality of life is more precarious. Rivers and lakes are
becoming polluted its ...