Not merging all pages

[Marc Davis]

Yet another merging problem.  After merging this 53 page PDF file with itself 
using PDFBox 1.8.8, I only get 16 pages total (8 pages recognized by PDFBox):

https://www.dropbox.com/s/s6pybruhrm3bvki/helen%20shih.pdf?dl=0 

Thanks,
Marc