VERMA, A.; SHRIVASTAVA, A. Design and development of shovel type-spring steel furrow opener for cultivator mounted seed metering mechanism. BIBECHANA, [S. l.], v. 15, p. 79–84, 2017. DOI: 10.3126/bibechana.v15i0.18455. Disponível em: https://nepjol.info/index.php/BIBECHANA/article/view/18455. Acesso em: 19 may. 2024.