I've seen copies of Kirsten Ralov's book (The Bournonville School/ The Daily Classes)on eBay (there's one there to date) and Amazon. I found a good bargain on one that was "marked" with margin notes and notations (which I find an extra value, not a deterent). The enchainements are notated in easy-to-follow bars and beats. Friday's class includes several variations from Konservatoriet. It still feels like Twister to me sometimes. An honored volume on my dance shelf.