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1Published 1999Subjects: “...Selection (Plant breeding) Iowa....”
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2Published 1989Subjects: “...Soil conservation Iowa....”
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3Published 1991Subjects: “...Soil conservation Iowa....”
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4Published 1988Subjects: “...Watersheds Iowa....”
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5by Dankert, Wayne N.Subjects: “...Soil surveys Iowa Muscatine County....”
Published 1989
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6by Detroy, Mark G.Subjects: “...Water quality Iowa Pottawattamie County....”
Published 1981
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7by Voy, Kermit D.Subjects: “...Soils Iowa Hardin County Maps....”
Published 1985
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8by Dideriksen, Robert O.Subjects: “...Soil-surveys Iowa Hamilton County....”
Published 1986
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9Published 1988Subjects: “...Soil surveys Iowa Osceola County....”
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10by Chowdhery, Asghar A.Subjects: “...Soil surveys Iowa Clarke County....”
Published 1989
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11by Lensch, Richard A.Subjects: “...Soil surveys Iowa Hancock County....”
Published 1990
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12by Branham, Charles E.Subjects: “...Soil surveys Iowa Pottawattamie County....”
Published 1989
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13by Ceolla, DaleSubjects: “...Soils Iowa Cherokee County Maps....”
Published 1989
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14by DeWitt, Thomas A.Subjects: “...Soils Iowa Decatur County Maps....”
Published 1990
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15by Clark, BennieSubjects: “...Soil surveys Iowa Montgomery County....”
Published 1990
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16by O'Connor, ThomasSubjects: “...Soil surveys Iowa Sioux County....”
Published 1990
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17by Lucassen, John A.Subjects: “...Soil surveys Iowa Davis County....”
Published 1991
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18by Minger, Mark J.Subjects: “...Soil surveys Iowa Jones County....”
Published 1991
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19by Dideriksen, Robert O.Subjects: “...Soil surveys Iowa Wright County....”
Published 1992
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20by Boeckman, Louis E.Subjects: “...Soil surveys Iowa Ringgold County....”
Published 1992
Government Document Book