Grabau, Amadeus W.  1870-1946. <br/><br/>
Ordovician fossils of north China, 
by Amadeus W. Grabau, with plates I-IX and 20 text figures. 
 - Peking,  Published by the Geological Survey of China,  1922. 
 - 127 p.  illus., IX plates.  31 cm. 
<br/><br/>Bibliography: p. 96-98. 
<br/><br/><label>LCCN: </label>gs 34000071  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Paleontology--China.<br/>Paleontology--Ordovician.
<br/><br/><label>LC Class. No.: </label>QE756.C6  / A3 ser. B, vol. 1, fasc. 1