James Thompson said:
Look in the news group alt.binaries.e-book.technical
there are some physics books there, not sure if its what you are looking
for.
Also, advertise your needs in the "Pgh.for sale" newsgroup - Many Carnegie
Mellon University students and professors sell books there on occasion - but
<usually> more so towards the end of a semester, year or graduation. CMU is
known for Computer related classes, Electronics/Electrical Engineering,
Robotics, Physics - etc. There may be someone lurking there who has the book
or the segments you need and can provide them.
Good luck!