Water chemistry
Found in 1 Collection or Record:
LAGOS WATER SUPPLY (NIGERIA)
(5) ; D.W.4508.- ; Chemcial dosing plant. ; ISSUED BY THE WEST AFRICAN PHOTOGRAPHIC SERVICE, REGIONAL INFORMATION OFFICE, ACCRA, GOLD COAST, BRITISH WEST AFRICA.--Recto ; WEST AFRICAN PHOTOGRAPHIC SERVICE OF THEĀ REGIONAL INFORMATION OFFICE; P.O. Box 555 ; ACCRA GOLD COAST WEST AFRICA ; Photograph No. D.W. 4508 ; CROWN COPYRIGHT RESERVED. ; 6 ; NI-100 -- Verso