TAN, H. C. Atlas for the geology of Szechuan province and Eastern Sikang. / Atlas for the geology of the Tsinlingshan and Szechuan. Peiping (Pékin), 1931 et 1935. 405 x 525 mm. Imprimé en couleurs. Oblong folio atlas, stapled and bound with orange cords; 36 single plates and 5 folding plates. Slightly loose binding, the last plate is detached. + Square folio atlas, bound with red cords, title and 17 single maps. Set of 2 atlases published by The National Geology Survey of China: “Atlas for the Geology of the Tsinlingshan” illustrated with 17 maps, and “Atlas for the Geology of the Szechuan” illustrated with 41 maps (5 folding).