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Geologic reference sources : a subject and regional bibliography of publications and maps in the geological sciences
by Dederick C. Ward, Marjorie W. Wheeler ...
Bok Språk ikke angitt 1981
Bibliography of theses in geology 1967-1970 : a cooperative project ...
ed. by Dederick C. Ward
Bok Engelsk 1973
Geologic reference sources : a suject and regional bibliography of publications and maps in the geological sciences
by Dederick C. Ward and Marjorie W. Wheel...
Bok Språk ikke angitt 1972