On the recordDecember 16, 1906
Especial care has been devoted to minimizing the risk due to the presence of those species of mosquitoes which have been found to propagate malarial and yellow fevers.
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presidency.ucsb.eduEspecial care has been devoted to minimizing the risk due to the presence of those species of mosquitoes which have been found to propagate malarial and yellow fevers.
Message to Congress After Returning from the Canal Zone in Panama
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