\HeaderA{rivers}{Lengths of Major North American Rivers}{rivers}
\keyword{datasets}{rivers}
\begin{Description}\relax
This data set gives the lengths (in miles) of 141 \dQuote{major}
rivers in North America, as compiled by the US Geological Survey.
\end{Description}
\begin{Usage}
\begin{verbatim}rivers\end{verbatim}
\end{Usage}
\begin{Format}\relax
A vector containing 141 observations.
\end{Format}
\begin{Source}\relax
World Almanac and Book of Facts, 1975, page 406.
\end{Source}
\begin{References}\relax
McNeil, D. R. (1977) \emph{Interactive Data Analysis}.
New York: Wiley.
\end{References}

