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\begin{table}  \label{tab:1}  \caption{\textbf{Table 1. Some \caption{Some  descriptive statistics about top domains linked in astronomy publications}. This table lists total number of links and broken links (HTTP status codes 3xx, 4xx, and 5xx) to top domains (domains with over 100 links) found within articles published in  the four main astronomy journals between 1997 and 2008. The table also  shows, for each domain, the portion of links to common filename