Bread-Bakers v106.n007.1

I'm hoping some of you experts can help me.

I do not have any local stores that carry UNbleached bread flour, 
just the bleached.  I do not want to order it due to the shipping 
costs.  Is it possible to duplicate it by mixing pure gluten flour in 
with unbleached flour?  What would the ratios be?

Thanks in advance.