Silicified Middle Ordovician trilobites - Whittington, H. B. (Harry Blackmore), 1916-2010; Evitt, William R., 1923-2009 ([New York] : The Geological Society of America, 1953)
Obsahuje bibliografii a rejstřík
Keywords: fosilie; ordovik; paleontologie; trilobiti; fossils; Ordovician; paleontology; trilobites; monografie