CLAYCOMB, Donald M.; PETTY, Gregory C. A Three Year Longitudinal Study Of The Perceived Needs For Assistance As Ranked By Vocational Agriculture Instructors. Journal of Agricultural Education, [S. l.], v. 24, n. 4, p. 28–33, 1983. DOI: 10.5032/jaatea.1983.04028. Disponível em: https://jae-online.org/index.php/jae/article/view/245. Acesso em: 11 aug. 2024.