Jackson, Robert Tracy,  1861-1948. <br/><br/>
Fossil Echini of the Panama Canal Zone and Costa Rica. 
By Robert Tracy Jackson. 
 - Washington,  Govt. print. off.,  1918. 
 - 103-116 p.  illus.  25 cm. 
 - Smithsonian institution. United States National museum. Bulletin 103 [pt.5] .
 - United States National Museum.  Bulletin ;  103 [pt.5] .
<br/><br/> At head of title: Contributions to the geology and paleontology of the Canal Zone, Panama, and geologically related areas in Central America and the West Indies.  "Extract from Bulletin 103, pages 103-116, with plates 46-52."  Stamped on t.-p.: Issued Feb. 19, 1919.  "Essentially a reprint of my paper bearing the same title published in the Proceedings of the United States National museum, volume 53, pages 489-501 ... September 24, 1917."--Introd. 
<br/><br/><label>LCCN: </label>s  21000005  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sea urchins, Fossil.<br/>Paleontology--Panama.<br/>Paleontology--Costa Rica.
<br/><br/><label>LC Class. No.: </label>Q11  / .U6 no. 163, pt. 5