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  1. 41
    Proceedings of the second Pan American scientific congress : the value of technical societies to mining engineers /

    Proceedings of the second Pan American scientific congress : the value of technical societies to mining engineers / by Raymond, Rossiter W.

    Article
  2. 42
    Proceedings of the second Pan American scientific congress : lifting ground water by compressed air /

    Proceedings of the second Pan American scientific congress : lifting ground water by compressed air / by Saunders, W. L.

    Article
  3. 43
    Proceedings of the second Pan American scientific congress : the nitrate industry /

    Proceedings of the second Pan American scientific congress : the nitrate industry / by Cuevas, Enrique

    Article
  4. 44
    Proceedings of the second Pan American scientific congress : standard methods of sampling and analysis and standard samples /

    Proceedings of the second Pan American scientific congress : standard methods of sampling and analysis and standard samples / by Hillebrand, W.

    Article
  5. 45
    Proceedings of the second Pan American scientific congress : food and efficiency /

    Proceedings of the second Pan American scientific congress : food and efficiency / by Wiley, Harvey W.

    Article
  6. 46
    Proceedings of the second Pan American scientific congress : methods and cost of obtaining crude petroleum in California /

    Proceedings of the second Pan American scientific congress : methods and cost of obtaining crude petroleum in California / by Cox, Thomas

    Article
  7. 47
    Proceedings of the second Pan American scientific congress : legal and economic factors in the conservation of oil and gas /

    Proceedings of the second Pan American scientific congress : legal and economic factors in the conservation of oil and gas / by Johnson, Roswell H.

    Article
  8. 48
    Proceedings of the second Pan American scientific congress : área de distribución de los yacimientos petrolíferos y estado actual de su explotación en la Argentina /

    Proceedings of the second Pan American scientific congress : área de distribución de los yacimientos petrolíferos y estado actual de su explotación en la Argentina / by Hermitte, Enrique M.

    Article
  9. 49
    Proceedings of the second Pan American scientific congress : tanning materials from native source in Latin American countries /

    Proceedings of the second Pan American scientific congress : tanning materials from native source in Latin American countries / by Norton, Thomas H.

    Article
  10. 50
    Proceedings of the second Pan American scientific congress : dyestuffs from materials native to Latin-American countries /

    Proceedings of the second Pan American scientific congress : dyestuffs from materials native to Latin-American countries / by Sadtler, Samuel P.

    Article
  11. 51
    Proceedings of the second Pan American scientific congress : the coals of Brazil /

    Proceedings of the second Pan American scientific congress : the coals of Brazil / by White, I. C.

    Article
  12. 52
    Proceedings of the second Pan American scientific congress : the mineral production of Latin America /

    Proceedings of the second Pan American scientific congress : the mineral production of Latin America / by Roush, G. A.

    Article
  13. 53
    Proceedings of the second Pan American scientific congress : mining in Ecuador /

    Proceedings of the second Pan American scientific congress : mining in Ecuador / by Mercer, J. W.

    Article
  14. 54
    Proceedings of the second Pan American scientific congress : apuntes sobre la riqueza minerológica de Venezuela /

    Proceedings of the second Pan American scientific congress : apuntes sobre la riqueza minerológica de Venezuela / by Jiménez, Germán

    Article
  15. 55
    Proceedings of the second Pan American scientific congress : drying oils produced in the Americas /

    Proceedings of the second Pan American scientific congress : drying oils produced in the Americas / by Gardner, Henry A.

    Article
  16. 56
    Proceedings of the second Pan American scientific congress : paint for Latin American countries /

    Proceedings of the second Pan American scientific congress : paint for Latin American countries / by Toch, Maximilian

    Article
  17. 57
    Proceedings of the second Pan American scientific congress : extension y posible explotación de los depósitos de borato en la Argentina /

    Proceedings of the second Pan American scientific congress : extension y posible explotación de los depósitos de borato en la Argentina / by Hermitte, Enrique M.

    Article
  18. 58
    Proceedings of the second Pan American scientific congress : electric furnace metallurgy /

    Proceedings of the second Pan American scientific congress : electric furnace metallurgy / by Richards, J. W.

    Article
  19. 59
    Proceedings of the second Pan American scientific congress : Cuban iron mines and methods /

    Proceedings of the second Pan American scientific congress : Cuban iron mines and methods / by Little, James E.

    Article
  20. 60
    Proceedings of the second Pan American scientific congress : the value of scientific research and laboratory control in the manufacture of foods /

    Proceedings of the second Pan American scientific congress : the value of scientific research and laboratory control in the manufacture of foods / by Bigelow, W. D.

    Article

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