I know I have done this before, so I'm sure it's possible, I just forget how to do it. There's a way to tell convert to grab a specific page of a PDF, and I'd like to keep the format of that page as PDF.
Use convert to grab a specific page from a PDF file?
pdf;imagemagick
ImageMagick is a tool for bitmap images, which most PDFs aren't. If you use it, it will rasterize the data, which is often not desirable.Pdftk can extract one or more pages from a PDF file.pdftk A=input.pdf cat A42 A43 output pages_42_43.pdfIf you have a LaTeX installation with PDFLaTeX, you can use pdfpages. There's a shell wrapper for pdfpages, pdfjam.pdfjam -o pages_42_43.pdf input.pdf 42,43Another possibility (overkill here, but useful for requirements more complex that one page) is Python with the PyPdf library.#!/usr/bin/env pythonimport copy, sysfrom pyPdf import PdfFileWriter, PdfFileReaderinput = PdfFileReader(sys.stdin)output = PdfFileWriter()for i in [42, 43]:    output.addPage(input.getPage(i))output.write(sys.stdout)