Bro if you had made it clearer as to whcih type of abbreviation you were looking for, i would have given you straight answer because ISN stands for quite a few things, anyways you can try the following link to see if you find your desired abbreviation:
http://en.wikipedia.org/wiki/ISN
Commercial Investment Trust
Hong Kong and Shanghai Banking Corporation
Comptant is what the letters cpt stand for in French banking.Specifically, the word functions as a masculine adjective or noun. Either way, it translates as "cash." The pronunciation will be "ko-taw" in French.
Federal Deposit Insurance Corporation
Binder Dijker Otte
The letters STP stand for Standerd Temperature and Pressure
ISN=Initial Sequence Number ISN=Interactive Student Notebook ISN=International Society For Nephrology
Without an equality sign the given letters can't be considered to be an equation.
If the letters are in parentheses after a name, example John Doe (Bs), I believe they stand for "British subject".
In this context, DOE may stand for depends on experience.
Bambi's mate Faline. Today's Times crossword asks for a Disney doe, three letters?
Department of Energy
It stands for "Bitmap".
It means depending on experience.
Cytochrome p‐450.
The arrows stand for the 13 original colonies.
the element Ununnilium