[Koha] How to record bound volume serials?

[Arup Raychaudhury]

I shall be grateful if anybody can guide me in this matter. I understand
Koha does not use 853 Tag. Say, I have a serial "All India Cooperative
Bulletin" and received its 4 issues of volume 53 in Koha. Individual issue
with unique bar code. Now, it has been bound into a physical volume

How do I record this bound volume of of the serial in Koha?
What happens to loose issue item records?

-- 
Arup Raychaudhury