I have just had the pleasure of reviewing Moshe Blidstein, Purity, community and ritual in early Christian literature (Oxford: OUP, 2017.)
I will not repeat the review here except to say that this is an excellent work. With consideration of the Didache and the Didascalia, as well as of baptismal and community-forming rituals, it is of natural interest to readers of this blog.
Badger your librarian to get it!
ancientchurchorders 