Books before printing house

[scusemyenglish]

Salam.

I have one question in my head since many time.

We have lot of book in our patrimony.

I want to know. How this books was published knowing printing did not existed in this area?

How Bukhari, Abou Hanifa etc... did for published their books.


Barak'Allah ou fikoum

[Farid]

Wa alaykum alsalam,

As you can imagine, scribes had to write the whole thing down from A to Z.