I may be wrong but my guess was that the OP wanted to keep the layout.
Oh, if so then the simplest solution is to place PDF pages in Pages (which was what you said, if memory serves). This will preserve the appearance of composition and illustration.
However, be aware that if in Adobe InDesign you code text and convert to composed type that is searchable (with an Adobe Original in the Adobe OpenType Library), and if you save that into a PDF within which the composed type is still searchable, then if you place that PDF as a graphic and save out a PDF with the first PDF as nested object, then the composed type in the first PDF will not be searchable. This is a published bug in InDesign 2, and an unpublished bug in InDesign 3 as the problem was hidden. Placing PDF in an application and saving out another PDF within which the first PDF is nested should be tested. Whereas embedding of an ICC file is not affected by nesting of PDF within PDF, embedding of an SFNT file (TrueType, OpenType) is affected.
If the aim is to print, then no problem. If the aim is anything other than print, then best aware that it is up to oneself to test that the process produces the expected result.
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