This is what worked TO AN EXTENT (no page breaks in table):
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(At top of org file:)
#+ATTR_LaTeX: longtable align=l|lp{3cm}r|l
#+LATEX_HEADER: \usepackage{pdflscape}
#+LaTeX: \begin{center} \begin{landscape}
#+LaTeX: {}\begin{sidewaystable}\footnotesize
[ORG TABLE HERE]
#+LaTeX:\end{landscape} \end{center}
#+LaTeX: \end{sidewaystable}
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No such thing as breaking across the page happened. Neither was I able to use longtable to do so.
Alan