New interatheriines (Interatheriidae, notoungulata) from the Paleogene of central Chile and southern Argentina / Ralph B. Hitz -- [et al.].

n.s. no.42(2000)

Geochronology, stratigraphy, and typology / John Andrew Wilson --.

v.33:no.11(1975)

The stratigraphy of the Devonian Holland Quarry shale of Ohio / J. Ernest Carman --

v.14:no.1(1960)