How do I extract specific pages from a PDF file using Ghostscript from the command line?

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gswin64c -sDEVICE=pdfwrite -dNOPAUSE -dBATCH -dSAFER -dFirstPage=70 -dLastPage=71 -sOutputFile=output.pdf input.pdf
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How do I convert PDF to PNG images from the command line using Ghostscript?