00671cam a2200205 4500 546595175 TxAuBib 20220119120000.0 220119s2022||||||||||||||||||||||||eng|u 67196 Project Gutenberg PGUSA eng TxAuBib Clarke, John Mason. Observations on the Terataspis grandis, Hall, the largest known trilobite [Gutenberg] / John Mason Clarke. Project Gutenberg, 2022. Project Gutenberg ; 67196 Public domain in the USA. Electronic text. Project Gutenberg ; 67196. http://www.gutenberg.org/ebooks/67196 TXTLL