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DESIGN AND CONSTRUCTION OF AN AUTOMATIC DOOR CONTROL SYSTEM
FAISAL IDRIS/NASIRU ANDULLAH/FATIMA HASSANABDULLAH! MUHAMMADSADIQ/ZAHARADEEN M LAWAL
(1970-01)
The present study was carried out to assess the level
concentration of different heavy metals which include lead, iron and chromium in the wrapping paper used to wrap both the ...