Proceedings of the second Pan American scientid congress : engenharia sanitaria e abastecimento municipal de agua / by Pereira da Silva, Clodomiro

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Proceedings of the second Pan American scientid congress : ingeniería sanitaria - saneamiento de la ciudad de Bogotá / by Narváez Q., Carlos de

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Proceedings of the second Pan American scientific congress : la influencia de la habitación en la lucha contra la tuberculosis / by Monteverde, Juan

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Proceedings of the second Pan American scientific congress : disposal of refuse / by Sedgwick, William T.

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Proceedings of the second Pan American scientid congress : algo sobre saneamiento de Guayaquil / by Manrique, Francisco

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Proceedings of the second Pan American scientific congress : available methods for the sanitary disposal of refuse / by Soper, George A.

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Proceedings of the second Pan American scientific congress : disposal ofsewage and refuse in America / by Knowles, Morris

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Congreso Científico Panamericano (2 : 1915-1916 : Washington).

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Congreso Científico Panamericano (2 : 1915-1916 : Washington).

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Congreso Científico Panamericano (2 : 1915-1916 : Washington).

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