Dropped a stitch at the end of the row!

Hi everybody. I’m making my first hat today (yay!). I’m about an inch into the stockinette stitch part and I’ve just realized that I dropped a stitch at the very end about 3 rows down.
I’ve seen how dropped stitches can be picked up in the middle of a work, but at the end of a row? Does any one have any advice for me?

Thanks!

I found this http://books.google.com/books?id=kBa7C1_pS08C&pg=PA52&lpg=PA52&dq=fixing+dropped+edge+stitch&source=bl&ots=_cOGZMKKsT&sig=x1-u5G9yCaqyqjZGPjwitm2pnM8&hl=en&ei=8-cyS5PPC4jllAeSqL2fBw&sa=X&oi=book_result&ct=result&resnum=2&ved=0CAsQ6AEwAQ#v=onepage&q=&f=false

That’s incredibly helpful! Thank you!
:woohoo: