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21
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22by Dominik, T., Department of Agriculture, Washington, D.C. (USA) eng, National Science Foundation, Washington, D.C. (USA) eng
Published 1966Texto bibliotecaFAO IT -
23by Toll, S, Department of Agriculture, Washington, D.C. (USA) eng, National Science Foundation, Washington, D.C. (USA) eng
Published 1975Texto bibliotecaFAO IT -
24
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25
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26by 86955 Lipa, J.J., 6913 Department of Agriculture, Washington, DC (EUA), 15063 National Science Foundation, Washington, DC (EUA)
Published 1975bibliotecaIICA -
27
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28by Petrov, D.F. (ed.), Department of Agriculture, Washington, DC (USA) eng, National Science Foundation, Washington, DC (USA) eng
Published 1984Texto bibliotecaFAO IT -
29
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30
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31
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32
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33
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34by Orlos, H., Department of Agriculture, Washington, D.C. (USA) eng, National Science Foundation, Washington, D.C. (USA) eng
Published 1975Texto bibliotecaFAO IT -
35by Strzemski, M., Department of Agriculture, Washington, D.C. (USA) eng, National Science Foundation, Washington, D.C. (USA) eng
Published 1975Texto bibliotecaFAO IT -
36
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37by Cauquil, J., Agricultural Research Service, Washington, D.C. (USA) eng, National Science Foundation, Washington, D.C. (USA) eng
Published 1975Texto bibliotecaFAO IT -
38by Raitviir, A.G., Department of Agriculture, Washington, D.C. (USA) eng, National Science Foundation, Washington, D.C. (USA) eng
Published 1969Texto bibliotecaFAO IT -
39
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40