Carbon and Nitrogen Isotope Ratios of Food and Beverage in Brazil oleh Luiz A. Martinelli, Gabriela B. Nardoto, Maria A. Z. Perez, Geraldo Arruda Junior, Fabiana C. Fracassi, Juliana G. G. Oliveira, Isadora S. Ottani, Sarah H. Lima, Edmar A. Mazzi, Taciana F. Gomes, Amin Soltangheisi, Adibe L. Abdalla Filho, Eduardo Mariano, Fabio J. V. Costa, Paulo J. Duarte-Neto, Marcelo Z. Moreira, Plinio B. Camargo