JOKINEN, R. Variability of topsoil properties at the southern coast of Finland and the number of  soil samples needed for the estimation of soil properties. Agricultural and Food Science, [S. l.], v. 55, n. 2, p. 109–117, 1983. DOI: 10.23986/afsci.72123. Disponível em: https://journal.fi/afs/article/view/72123. Acesso em: 20 may. 2024.