BAASTRUP, Elise. Jord under mikroskop. Varv, [S. l.], v. 1979, n. 2, p. 35–41, 1979. DOI: 10.7146/varv.v1979i2.148865. Disponível em: https://tidsskrift.dk/varv/article/view/148865. Acesso em: 6 dec. 2025.