Land ownership in the provinces of the Roman Empire?

Can anyone point me towards sources on who, roughly, owned how much land in the various provinces of the Roman Empire (I´m mostly interested in the Eastern half), or give a very rough summary him/herself?
I don`t mean who as in what persons / clans / dynasties, but more like:
Where did Roman aristocrats own how much, where did local landowning elites own a lot, where did small farmers dominate?
 
Agrarian Law; 111 B.C.

http://avalon.law.yale.edu/ancient/agrarian_law.asp

Public Lands and Agrarian Laws of the Roman Republic

http://www.gutenberg.org/files/12638/12638-h/12638-h.htm

Law and the Rural Economy in the Roman Empire

https://books.google.pt/books?id=V5qFfTSYJCEC&pg=PA46&lpg=PA46&dq=land+ownership+in++the+roman+empire&source=bl&ots=bkpYAF7MQM&sig=7CW8_xBlqAnMFfi0risDafFNC2g&hl=pt-PT&sa=X&ved=0CC4Q6AEwAjgKahUKEwjHg5DTuoDIAhXIxRQKHYPlDrM#v=onepage&q=land%20ownership%20in%20%20the%20roman%20empire&f=false


About the land ownership in the roman world i can point you this book of the Oxford University Press http://ukcatalogue.oup.com/product/academic/series/classicalstudies/osre/9780198728924.do

On a more personal knowledge, I can tell you that the greatest land owner in the Empire was the Emperor, the other landowners together didn't held as much land as he. Part of the money to pay for the army came from the Emperors estates. The Emperor had his personal revenue plus the revenue that the "Senate" officially received in the form of taxes, but from Tiberius onwards the two treasuries melted together.
 
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