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 IRB383 O19038
Iowa State College., Agricultural Experiment Station The economics and crop rotations and land use: a fundamental study in efficiency with emphasis on economic balance of forage and grain crops Iowa: [s.n.], 1951 - (Research Bulletin 383) * Administrative report * Series