The digital Loeb Classical Library is organized by volumes and works. Volumes can be reached by URL, and works by either URL or DOI. In addition, any set of facing pages can be accessed by its unique URL.
For instance, this is the volume URL for LCL 35: http://www.loebclassics.com/
This is the URL for Tacitus’ Germania: http://www.loebclassics.com/