01345cam a22002891  4500001001300000003000400013005001700017008004100034010001700075035001900092040002100111042001200132050002800144100003900172245008500211260004300296300003100339490008000370500016600450500006700616500004400683500018800727650002500915650002600940650003000966810005900996s  21000005 DLC20260227111911.0751117s1918    xx            000 0 eng    as  21000005   a(OCoLC)1837211  aDLCcOKentUdDLC  apremarc00aQ11b.U6 no. 163, pt. 51 aJackson, Robert Tracy,d1861-1948.10aFossil Echini of the Panama Canal Zone and Costa Rica.cBy Robert Tracy Jackson.  aWashington,bGovt. print. off.,c1918.  a103-116 p.billus.c25 cm.1 aSmithsonian institution. United States National museum. Bulletin 103 [pt.5]  aAt 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.  a"Extract from Bulletin 103, pages 103-116, with plates 46-52."  aStamped on t.-p.: Issued Feb. 19, 1919.  a"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. 0aSea urchins, Fossil. 0aPaleontologyzPanama. 0aPaleontologyzCosta Rica.2 aUnited States National Museum.tBulletin ;v103 [pt.5]