Example

 pdf2ps 201a-2005-Sec2-yp.pdf s2.ps
 psnup -n 2 -pquarto -d s2.ps | pslpr -Plp1
 rm s2.ps

s2.ps is an arbitrary name
the first command converts from pdf to postscript (ps).
the second command makes the postscript file 2-up, and prints it.
the third command removes the extra postscript file that was created.