PORRO, Carlo et LABUS, Pietro. Atlante dei Ghiacciai italiani. Parte Prima. Carta Corografica. Ist. Geografico Militare, Firenze, 1927. 470 x 530 mm. Folio in wrappers, containing 4 maps. Carta Corografica, scale 1:500,000. Published by the Comitato Glaciologico. Map in four sheets forming the large chorographic map of Italy. Provides an overview of the distribution of Italian glaciers in the Alpine and Apennine ranges. It was intended to complement the 1925 Italian glacier survey and to serve as a basis for detailed maps (at a scale of 1:25,000) for each glacial region.