Palynology of the H.T.Butte Lignite, (Tongue River Formation), and the Superjacent Sentinel Butte Formation of Western North Dakota, (Paleoene).
Reference:
Moore,L.V. et al. (1973)
Palynology of the H.T.Butte Lignite, (Tongue River Formation), and the Superjacent Sentinel Butte Formation of Western North Dakota, (Paleoene). American Association of Stratigraphic Palynologists,6th Annual Meeting,Abstracts and Program
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