Harrington, Horacio J.Leanza, Armando F.2008-05-282008-05-281957-05-01https://hdl.handle.net/1808/3894276 p. illus., maps. 26 cm.en-USTrilobitesPaleontology --ordovicianPaleontology --ArgentinaOrdovician Trilobites of ArgentinaBookopenAccess