[Koha] how to classify e-books/e-readers

[Giuseppe Angilella]

Hi,

my library purchased a few e-readers (Kindles), which I am going to 
populate with e-books soon.

Each e-reader is likely to eventually contain the same collection of 
e-books, but should of course be available for loan separately.

I assume that a separate MARC record should be entered for each different 
e-book, but how do I enter a record (and an associated item) for each 
e-reader?

I am sure this topic has been dealt with earlier, but I could not find 
specific solutions in the mailing list's thread (apologies).

Many thanks and best regards,

Giuseppe.