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21
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22
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23
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24著者: Elder, Donald C., 1952-主題 “...Artificial satellites in telecommunication United States History....”
出版事項 1995
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25
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26出版事項 1998主題 “...Internetworking (Telecommunication) Specifications United States....”
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27
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28
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29
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30出版事項 2005主題 “...Telecommunication Law and legislation United States....”
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31
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32
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33
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34
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35出版事項 1996主題 “...Telecommunication policy United States....”
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36Law and the information superhighway : privacy, access, intellectual property, commerce, liability /著者: Perritt, Henry H.主題 “...Telecommunication Law and legislation United States....”
出版事項 1996
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40
