TY  - BOOK
AU  - Barbour,George Brown
TI  - The geology of the Kalgan area
AV  - QE294 .A4 ser. A, no. 6
PY  - 1929///
CY  - Peking
PB  - [Ministry of Agriculture and Mines, the Geological Survey of China]
KW  - Geology
KW  - China
KW  - Hebei Sheng
KW  - Geology, Stratigraphic
ER  -