Volume 20.2

On the Cover
Constanza Miliani, a researcher at the Instituto di Scienze e Tecnologie Molecolari CNR in Perugia, taking in situ measurements of the infared reflectance spectrum of fifteenth-century wall paintings by Filippo Lippi, as part of the Organic Materials in Wall Paintings project, which is being conducted by the GCI and a number of other scientific laboratories. Using the noninvasive technique of reflectance Fourier transform infared spectroscopy with fiber optics, she is able to classify the organic materials present on the surface of these paintings, which are located in Saint Stephen's Cathedral in Prato, Italy. Photo: Francesca Piqué.