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1
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2Published 1977Government Document Book
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3
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4
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5
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6
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7
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8Published 1981Government Document Book
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9
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10
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11Published 1985Government Document Book
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12
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13Questions and answers on biotechnology permits for genetically engineered plants and microorganisms.Published 1991Government Document Book
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14Published 1991Government Document Book
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15Published 1987Government Document Book
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16Published 1930Government Document Microform Book
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17Published 1994Government Document Book
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18Published 1994Government Document Book
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19
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20Published 1992Government Document Microform Book