Sally,
It's such an old war horse that most good music stores (especially ones that deal with classical sheet music)should at least have it in a compendium of some sort.
Try looking for books with titles like Songs of the 30's, etc. Try the library so you don't have to buy the whole book.
There are books of just tangos. I have one around somewhere. I'm sure it's in it. If I knew where it was I'd just send you a photocopy but I still haven't unpacked from moving yet.
You might try looking it up under it's French spelling: Jalousie????
Good Luck.
OB