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1Digital revistaSCIELO
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2by Harms, J. C., Southard, J. B., Walker, R. G., Society of Economic Paleontologists and Mineralogists.
Published 1982Texto bibliotecaUNCO AR -
3by Oliveira,S.C., Harms,J.S., Rech,E.L., Rodarte,R.S., Bocca,A.L., Goes,A.M., Splitter,G.A.
Published 1998Digital revistaSCIELO -
4by Harms, J.C. (John Conrad), 1930- 67317, Southard, J.B. 67318, Spearing, Darwin R. 31859, Walker, R.G. 67320, Society of Economic Paleontologists and Mineralogists. 49565
Published 1975Texto bibliotecaUNCO AR