1921
Volume 5, Issue 5
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645
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Abstract

Summary

In the examination of more than 350 collecting stations it was observed that populations of , the vector for in Puerto Rico, are not maintained in reaches of streams steeper than 20 meters fall per 1000 meters of length. Water quality and other factors apparently cause the spotty distribution observed in reaches with suitable gradients.

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/content/journals/10.4269/ajtmh.1956.5.921
1956-09-01
2017-09-25
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