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Report of the Geological exploration of the fortieth parallel made by order of the Secretary of War according to the acts of Congress of March 2 1867 and March 3 1869under the direction of A A Humphreys chief of engineersConference Proceeding BookPublié 1870
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When bugs were big plants were strange and tetrapods stalked the eartha cartoon prehistory of life before dinosaursBookpar Bonner, Hannah
Publié 2003 -
par Shubin, Neil
Publié 2020 -
par Prothero, Donald R.
Publié 2015