Why does On Demand Books refer to EspressNet as having a “catalogue of catalogues”?
ODB has relationships with many content providers, including publishers, content aggregators, libraries, university presses, self-publishing sites, etc. These content providers allow ODB to access their catalogue of digital files via EspressNet and the EBM. When users search EspressNet’s digital library, they are in fact searching multiple catalogues from all these different sources.