by Leo Lesquereux
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Manual of the mosses of North America
Principles of Paleozoic botany and the f...
Letters Written from America 18491853
Botanical and palaeontological report on...
On fucoides in the coal formations
The fossil plants of the coal measures o...
Paekche ŭi sŏnggwak kwa kŏnchʻuk
Department of Energy
Journey into summer
The works of Charles Darwin
Fossil Flora of Great Britain
Coal & power systems