"Andosols." . . "Andosols Arkansas." . . "Oklahoma." . . "Geological Survey (U.S.)," . . "Geologie. Aardwetenschappen." . . "Water-laid volcanic rocks of early Upper Cretaceous age in southwestern Arkansas, southeastern Oklahoma and northeastern Texas" . . . . . . . . . . . . . . . "Water-land volcanic rocks of Early Upper Cretaceous age in southwestern Arkansas, southeastern Oklahoma and northeastern Texas" . . . . . "Water-laid volcanic rocks of early upper Cretaceous age in southwestern Arkansas, southeastern Oklahoma and northeastern Texas" . . . . . . . . . . "Shorter contributions to general geology, 1928"@en . . . "Water-laid volcanic rocks of early upper cretaceous age in southwestern Arkansas, southeastern Oklahoma and northeastern Texas"@en . "Arkansas." . . . . "VSA: Centraal." . . "Andosols Oklahoma." . . "Texas." . . "Jura" . . "Andosols Texas." . .