A History of Engineering & Science in the Bell System TRANSMISSION TECHNOLOGY and ELECTRONICS TECHNOLOGY

[ED SHARPE]

A History of Engineering & Science in the Bell System TRANSMISSION TECHNOLOGY and ELECTRONICS TECHNOLOGY
A History of Engineering & Science in the Bell System TRANSMISSION TECHNOLOGY 

and A History of Engineering & Science in the Bell System ELECTRONICS TECHNOLOGY  ( the  transistor  and devices  etc...)
60 for the  Pair  plus  16.95  priority  mailing  insured  tracked and  signature  confirmation  payment to be  made  via  pay  pal  friends and  family...only  after  we  ok  who  gets them .
both   tight  beauty  copies  with   great  jackets on them!
Let me   know  asap   if  you  want.
extra  copies  help re-roof museum buildings!Thanks  Ed#