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
73 630.7 IRB401 O19056
Iowa State College., Agricultural Experiment Station Productivity and income of labour and capital on marshal silt loam farms in relation to conservation farming Iowa: [s.n.], 1953 - (Research Bulletin 401) * Administrative report * Series