PUUSTJÄRVI, V. The luxuriance of a bog in its natural state as an index to the quality of its peat. Agricultural and Food Science, [S. l.], v. 32, n. 1, p. 17–26, 1960. DOI: 10.23986/afsci.71533. Disponível em: https://journal.fi/afs/article/view/71533. Acesso em: 20 may. 2024.