STANA, D. A competitive study in the fertility of Trifolium pratense L. Select 1 variety in relation to the culture system. Notulae Botanicae Horti Agrobotanici Cluj-Napoca, [S. l.], v. 9, n. 1, p. 63–66, 1977. DOI: 10.15835/nbha91121. Disponível em: https://www.notulaebotanicae.ro/index.php/nbha/article/view/121. Acesso em: 13 aug. 2022.