All abstracts by Alexandra Guedes at Goldschmidt 2007
| (2007) Characterization of Carbon Materials in Metasediment Hosted Gold Deposits (NW Portugal) by micro-Raman Spectroscopy Dória A, Guedes A & Ribeiro MDA | 
| (2007) Micro-Raman Spectroscopy and Optical Reflectance Studies of Coals with Different Rank Guedes A, Valentim B, Rodrigues S, Costa A, Marques M & Flores D | 
| (2007) X-Ray Photoelectron Spectroscopy Study of Coals with Different Rank Valentim B, Costa A, Guedes A, Boavida D, Marques M & Flores D | 

