I catalog and file all my documentation by HP Part Number, EduCALC Catalog Number, Sequential Index number for everything else.
I am confused by books published by Grapevine, such as "An easy Course In Programming The HP-41" by Ted Wadman and Chris Coffin, Illustrated by Robert Bloch, ISBN 0-031011-00-0.
EduCALC cataloged it as "Stock #P-193". HP gave it a part number "92234T" in their insert booklet "A Wealth of Accessories to Complement HP Calculators, the HP-71 Handheld Computer and Peripherals". "92234T" is printed on the back cover of this paperback, spiral-bound book ("An easy Course In Programming The HP-41").
Can anyone explain the part numbering?