MALTSBERGER, B. From Whence We´ve come. Journal of the Professional Association for Cactus Development, [S. l.], p. 1–2, 1990. DOI: 10.56890/jpacd.vi.387. Disponível em: https://www.jpacd.org/jpacd/article/view/387. Acesso em: 19 dec. 2025.