PESSI, Y. The volume weight of the organic matter in the plough layer of peat lands cultivated by different methods. Agricultural and Food Science, [S. l.], v. 33, n. 1, p. 248–255, 1961. DOI: 10.23986/afsci.71558. Disponível em: https://journal.fi/afs/article/view/71558. Acesso em: 7 may. 2024.