com.google.gdata.data.books
Classes 
BooksCategory
BooksCategory.Scheme
BooksLink
BooksLink.Rel
BooksLink.Type
BooksNamespace
CollectionEntry
CollectionFeed
Embeddability
Embeddability.Value
OpenAccess
OpenAccess.Value
Review
Viewability
Viewability.Value
VolumeEntry
VolumeFeed