Spectrographic analyses of insoluble-residue samples, Harrison 1 degree by 2 degrees Quadrangle, Missouri and Arkansas; drill holes nos. 16, 17, and 20
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Barbara Chazin, M.S. Erickson. "Spectrographic analyses of insoluble-residue samples, Harrison 1 degree by 2 degrees Quadrangle, Missouri and Arkansas; drill holes nos. 16, 17, and 20." Antarctica A Keystone in a Changing World (1987)