POHJAKALLIO, O.; ANTILA, S. On the effect of day-length on the rate of development of spring cereals. Agricultural and Food Science, [S. l.], v. 29, n. 1, p. 194–201, 1957. DOI: 10.23986/afsci.71424. Disponível em: https://journal.fi/afs/article/view/71424. Acesso em: 7 jul. 2024.