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21
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22
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23
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24
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25Published 1971Government Document Conference Proceeding Book
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26Published 2002Government Document Book
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27
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28
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29Published 1969Subjects: “...Water resources development Tucson, Arizona....”
Book -
30Published 1977Government Document Book
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31Government Document Conference Proceeding Book
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32
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33Published 2004Software eBook
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34
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35
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36
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37Published 1974Conference Proceeding Book
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38
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39
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40