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Nickel-silicate and associated nickel-cobalt-manganese-oxide deposits near Sao José do Tocantins, Goiaz, Brasil / by William T. Pecora.
- United States Government Printing Office,
- 1944.
- Washington, DC :
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Sierra Popoluca speech / by Mary L. Foster and George M. Foster.
- United States Government Printing Office,
- 1948.
- Washington, DC :