Nuno Luís Madureira https://www.cepese.pt/portal.%26%22%22%22%22%22%22%22%22%22%22%22%22%22%22%22%22%22%22%22/pt/publicacoes/autores/nuno-luis-madureira https://www.cepese.pt/portal.%26%22%22%22%22%22%22%22%22%22%22%22%22%22%22%22%22%22%22%22/@@site-logo/CEPESE+home.png Nuno Luís Madureira Artigos Opportunity and Chance: The Introduction of Sampling Techniques in Portugal 2003