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  1. 41
    Proceedings of the second Pan American scientific congress : concentración por flotación /

    Proceedings of the second Pan American scientific congress : concentración por flotación / by Fuchs, Federico G.

    Article
  2. 42
    Proceedings of the second Pan American scientific congress : the United States Bureau of Mines /

    Proceedings of the second Pan American scientific congress : the United States Bureau of Mines / by Manning, H.

    Article
  3. 43
    Proceedings of the second Pan American scientific congress : mine accidents and uniform records /

    Proceedings of the second Pan American scientific congress : mine accidents and uniform records / by Fay, Albert H.

    Article
  4. 44
    Proceedings of the second Pan American scientific congress : uniformity in statistics /

    Proceedings of the second Pan American scientific congress : uniformity in statistics / by Parker, Edward W.

    Article
  5. 45
    Proceedings of the second Pan American scientific congress : improvement in mining and metallurgy an aid to conservation /

    Proceedings of the second Pan American scientific congress : improvement in mining and metallurgy an aid to conservation / by Ricketts, L. D.

    Article
  6. 46
    Proceedings of the second Pan American scientific congress : buying and selling nonferrous metals of South America /

    Proceedings of the second Pan American scientific congress : buying and selling nonferrous metals of South America / by Vogelstein, Ludwig

    Article
  7. 47
    Proceedings of the second Pan American scientific congress : the public interest in mineral resources /

    Proceedings of the second Pan American scientific congress : the public interest in mineral resources / by Smith, George Otis

    Article
  8. 48
    Proceedings of the second Pan American scientific congress : the interrelation of pure and applied chemistry /

    Proceedings of the second Pan American scientific congress : the interrelation of pure and applied chemistry / by Clarke, F. W.

    Article
  9. 49
    Proceedings of the second Pan American scientific congress : assaying in the United States Mint Service /

    Proceedings of the second Pan American scientific congress : assaying in the United States Mint Service / by Woolley, Robert W.

    Article
  10. 50
    Proceedings of the second Pan American scientific congress : gold and silver deposits in North and South America /

    Proceedings of the second Pan American scientific congress : gold and silver deposits in North and South America / by Lindgren, Walter

    Article
  11. 51
    Proceedings of the second Pan American scientific congress : the storage and handling of explosives in mines /

    Proceedings of the second Pan American scientific congress : the storage and handling of explosives in mines / by Munroe, Charles E.

    Article
  12. 52
    Proceedings of the second Pan American scientific congress : the American Mining Congress and its work /

    Proceedings of the second Pan American scientific congress : the American Mining Congress and its work / by Scholz, Carl

    Article
  13. 53
    Proceedings of the second Pan American scientific congress : recent progress in electrical smoke precipitation /

    Proceedings of the second Pan American scientific congress : recent progress in electrical smoke precipitation / by Cottrell, F. G.

    Article
  14. 54
    Proceedings of the second Pan American scientific congress : coal-dust firing in reverheratory furnaces /

    Proceedings of the second Pan American scientific congress : coal-dust firing in reverheratory furnaces / by Kuzell, Charles R.

    Article
  15. 55
    Proceedings of the second Pan American scientific congress : organization and cost of geological surveys /

    Proceedings of the second Pan American scientific congress : organization and cost of geological surveys / by White, David

    Article
  16. 56
    Proceedings of the second Pan American scientific congress : edad de los fósiles peruanos /

    Proceedings of the second Pan American scientific congress : edad de los fósiles peruanos / by Lisson, Carlos I.

    Article
  17. 57
    Proceedings of the second Pan American scientific congress : preliminary report on the mineral resources of Uruguay - bibliografía de la geología, minerología y paleontología de la República Oriental del Uruguay /

    Proceedings of the second Pan American scientific congress : preliminary report on the mineral resources of Uruguay - bibliografía de la geología, minerología y paleontología de la... by Marstrander, Rolf

    Article
  18. 58
    Proceedings of the second Pan American scientific congress : determinación del oxígeno activo en los perboratos y polvos perboratados para lavar - contribución al estudio de las lacas coloreadas que forman las materias colorantes oxihidriladas con los mordientes oxídicos /

    Proceedings of the second Pan American scientific congress : determinación del oxígeno activo en los perboratos y polvos perboratados para lavar - contribución al estudio de las la... by Guggiari, Pedro Bruno

    Article
  19. 59
    Proceedings of the second Pan American scientific congress : explosives for use in industrial and commercial developments /

    Proceedings of the second Pan American scientific congress : explosives for use in industrial and commercial developments / by Munroe, Charles E.

    Article
  20. 60
    Proceedings of the second Pan American scientific congress : water and disease /

    Proceedings of the second Pan American scientific congress : water and disease / by Mason, W. P.

    Article

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