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1Published 1985Subjects: “...Nitrogen Statistics Periodicals....”
Government Document Microform Serial -
2
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3Published 1964Subjects: “...Nitrogen fertilizers....”
Book -
4
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5
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6
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7
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8by Postgate, J. R. (John Raymond)Subjects: “...Nitrogen-fixing microorganisms....”
Published 1978
Book -
9by Bartholomew, W. V. (William Victor), 1908-2004Subjects: “...Soils Nitrogen content....”
Published 1965
Book -
10Published 1978Subjects: “...Soils Nitrogen content Congresses....”
Book -
11
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12
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13Published 1983Subjects: “...Nitrogen Fixation Congresses....”
Book -
14
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15
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16
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17by Korenʹkov, D. A. (Dmitriĭ Aleksandrovich)Subjects: “...Nitrogen fertilizers....”
Published 1983
Book -
18
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19Published 1981Subjects: “...Nitrogen fertilizers Congresses....”
Conference Proceeding Book -
20by Postgate, J. R. (John Raymond)Subjects: “...Nitrogen-fixing microorganisms....”
Published 1987
Book