TY  - BOOK
AU  - Grabau,Amadeus W.
TI  - Ordovician fossils of north China,
AV  - QE756.C6 A3 ser. B, vol. 1, fasc. 1
PY  - 1922///
CY  - Peking
PB  - Published by the Geological Survey of China
KW  - Paleontology
KW  - China
KW  - Ordovician
N1  - Bibliography: p. 96-98
ER  -