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
551.71 C697 92071
Ponnamperuma Cyril ed. College Park Colloquium on Chemical Evolution (2nd : 1975 :University of Maryland) , Chemical Evolution of the Early precambrian Colloquim New York Academic press 1977 xi,221p. * Chemical evolution Stratigraphy