Organic matter in areas under secondary forests and pasture - Menezes, Carlos Eduardo Gabriel; Guareschi, Roni Fernandes; Pereira, Marcos Gervasio; Anjos, Lúcia Helena Cunha dos; Correia, Maria Elizabeth Fernandes; Balieiro, Fabiano Carvalho; Piccolo, Marisa de Cassia (CERNE, 2017)