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1Published 1967Subjects: “...Natural history Brazil....”
Conference Proceeding Book -
2Published 1968Subjects: “...Natural history South America....”
Book -
3Published 1956Subjects: “...Natural gas Geology....”
Conference Proceeding Book -
4by Litschauer, Risa von, 1895-Subjects: “...Natural history Dictionaries Polyglot....”
Published 1955
Book -
5by Hartlaub, Gustav, 1814-1900Subjects: “...Azara, Félix de, 1746-1821. Apuntamientos para la historia natural de los paxaros del Paraguay y...”
Published 1847
Microform Book