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3by Isler, D. A.Subjects: “...Aerial spraying and dusting in agriculture....”
Published 1964
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4Published 1957Subjects: “...Agriculture Research....”
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5Published 1956Subjects: “...Agriculture Research....”
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6
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7
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8Published 1970Subjects: “...Agriculture United States Charts, diagrams, etc....”
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9Published 2002Subjects: “...Farmers' bulletin (United States. Department of Agriculture) Indexes....”
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10Published 1961Subjects: “...Agriculture Biological warfare....”
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11Published 1983Subjects: “...Agriculture Research United States....”
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12Published 1999Subjects: “...Agriculture Research United States....”
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14Published 1957Subjects: “...Agriculture Research United States....”
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15by Isler, David Albert, 1902-Subjects: “...Aeronautics in agriculture....”
Published 1963
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16Published 2010Subjects: “...Agriculture Research Southern States....”
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17
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18
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19
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20Published 1981Subjects: “...Agriculture Research Congresses....”
Conference Proceeding Book