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A Scientometric Study of Fuel Cell Based on Paper and Patent Analysis

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Table 1.   Number of Papers and Patents in 1991-2010
Table 2.   Top 10 Countries of Paper Publications (1991-2010)
Table 3.   Top 10 Countries of Patent Publications (1991-2010)
Figure 3.   Distribution of Patents of Top 10 Countries in 1991-2010
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