Online Public Access Catalogue (OPAC)Library,Documentation and Information Science Division
“A research journal serves that narrow
borderland which separates the known from the unknown”
-P.C.Mahalanobis
628 Carlson, Carl Walter,, 1907- Water fit to use [by] Carl Walter Carlson [and] Bernice Wells Carlson. Illustrated with photos. and with drawings by Aline Hansens. - New York, John Day Co. [c1966] 127 p. illus. 24 cm. * Water-supply - Juvenile literature. * Carlson, Bernice Wells, * Title