HEWLETT PACKARD HP 9825A CALCULATOR OPERATING & PROGRAMMING MANUAL

HP 9825A Calculator String Variable Programming manual

Hewlett Packard 9825A Desktop Computer Systems Programming Manual

HP 9825A Calculator Extended I/O Programming

HP 9825A Calculator Advanced Programming

Hewlett Packard 9825A Desktop Calculator 9872A Plotter Programming

HEWLETT PACKARD HP 9825A CALCULATOR 9862A PLOTTER PROGRAMMING MANUAL

HP 59500-90005 9825A Calculator Users Guide