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  1. 1
    Fluorspar.
    Government Document Microform Journal
  2. 2
    Antimony.
    Government Document Microform Journal
  3. 3
    Feldspar in ... /
    Government Document Microform Serial
  4. 4
    Marketable phosphate rock.
    Government Document Microform Journal
  5. 5
    Manufactured abrasives.
    Government Document Microform Journal
  6. 6
    Lime.
    Government Document Microform Journal
  7. 7
    Cement.
    Government Document Microform Journal
  8. 8
    Gypsum.
    Government Document Microform Journal
  9. 9
    Peat in ...
    Government Document Microform Serial
  10. 10
    Potash in ...
    Government Document Microform Serial
  11. 11
    Perlite in ...
    Government Document Microform Serial
  12. 12
    Clays in ...
    Government Document Microform Serial
  13. 13
    Lime in ...
    Government Document Microform Serial
  14. 14
    Phosphate rock.
    Government Document Microform Serial
  15. 15
    Phosphate rock in ...
    Government Document Microform Serial
  16. 16
    Fluorspar in ...
    Government Document Microform Serial
  17. 17
    Cement imports and exports in ...
    Government Document Microform Serial
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