BUCHANAN, J. M. Better than Ploughing. PSL Quarterly Review, [S. l.], v. 66, n. 264, 2013. DOI: 10.13133/2037-3643/10304. Disponível em: https://rosa.uniroma1.it/rosa04/psl_quarterly_review/article/view/10304. Acesso em: 26 apr. 2024.