Applications of raman and infrared spectroscopies to the research and conservation of subterranean cultural heritage - Capel Ferron, C.; Jorge Villar, S.E.; Medianero Soto, F.J.; Lopez Navarrete, J.T.; Hernandez, V. (The Conservation of Subterranean Cultural Heritage - Selected papers from International Workshop on Conservation of Subterranean Cultural Heritage, CSCH 2014, 2014)