The nature of shield abnormalities in the turtle shell / [by] Rainer Zangerl -- and Ralph G. Johnson --.

v.10:no.29(1957)

Fishes of the families Evermannellidae and Scopelarchidae : systmatics, morphology, interrelationships, and zoogeography / Robert Karl Johnson.

n.s. no.12(1982)

Pennsylvanian invertebrates of the Mazon Creek Area, Illinois: the morphology and affinities of Tullimonstrum / Ralph Gordon Johnson -- and Eugene S. Richardson, Jr. --

v.12:no.8(1969)

New fossil polychaete from Essex, Illinois / Ida Thompson -- and Ralph G. Johnson --.

v.33:no.25(1977)

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

v.33:no.11(1975)

List of the specimens of British animals in the collection of the British Museum.

pt.15 (1853) [Nomenclature of Diptera.I]