FIROZ, Z.; ALAM, M.; UDDIN, M.; KHATUN, S. Effect of sowing time and spacing on lettuce seed production in hilly region. Bangladesh Journal of Agricultural Research, [S. l.], v. 34, n. 3, p. 531–536, 2009. DOI: 10.3329/bjar.v34i3.3980. Disponível em: https://banglajol.info/index.php/BJAR/article/view/3980. Acesso em: 17 jul. 2024.