\documentclass{article}
\usepackage{pdfpages}
\begin{document}
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%rotateoversize
\includepdf[pages={1-}]{L7classnotes20170207.pdf}
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%rotateoversize
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\includepdf[pages={1-},angle=0,landscape]{L9.pdf}
%rotateoversize
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\includepdf[pages={1-},angle=0,landscape]{L10.pdf}
%rotateoversize
\includepdf[pages={1-}]{L10classnotes20170217.pdf}
\includepdf[pages={1-},angle=0,landscape]{L11.pdf}
%rotateoversize
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\includepdf[pages={1-},angle=0,landscape]{L12.pdf}
%rotateoversize
\includepdf[pages={1-}]{L12classnotes20170224.pdf}
\includepdf[pages={1-},landscape]{Part2Quiz2017.pdf}

\end{document}
