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
551.72 Un58 69480
Frenkiel J Unesco Evaporation reduction physical and chemical principles and review of experiments Paris Unesco 1965 79p. * Evaporation reduction Paleozoic era