[Orgmode] Publish multi-file project to LaTeX

[Tony]

Hi,

is there a way to publish a set of org files as a single LaTeX project so that
one of the files becomes the LaTeX "master document" which includes the others?
The other files should then have no preamble but simply start with a section
header. As far as I can tell publishing makes each .org file into a .tex file
which would be processed separately by latex. 

Thanks,
Tony