蚊虫是寄生虫病的主要传播者。为确定传病媒介蚊虫在Uyo郊区的繁殖和流行地 ,从 1999年 5月到2 0 0 0年 1月在 2 0 8个繁殖地进行......

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In recent years there has been serious concern on the deteriorating groundwater quality due to the activities of man. Ge......

Surface electrical resistivity has been used as a tool in the detection of groundwater contamination. In this work, five......

Sub-Saharan African cities are uniquely characterized by retail competition influencing outlet location.This work focuse......