Please note that Mommsen uses the AUC chronology (Ab Urbe Condita), i.e. from the founding of the City of Rome. You can use this reference table to have the B.C. dates
From: The History of Rome, by Theodor Mommsen
Translated with the sanction of the author by William Purdie Dickson
It was a circumstance still more suspicious, that the new legislation neither supplemented the existing and manifestly unsatisfactory provisions for the collection of the pasture-money and the tenth by compulsory measures of a more effective kind, nor prescribed any thorough revision of the domanial possessions, nor appointed a magistracy charged with the carrying of the new laws into effect.
The distribution of the existing occupied domain-land partly among the holders up to a fair maximum, partly among the plebeians who had no property, in both cases in full ownership; the abolition in future of the system of occupation; and the institution of an authority empowered to make immediate distribution of any future acquisitions of territory, were so clearly demanded by the circumstances of the case, that it certainly was not through want of discernment that these comprehensive measures were neglected. We cannot fail to recollect that it was the plebeian aristocracy, in other words, a portion of the very class that was practically privileged in respect to the usufructs of the domains, which proposed the new arrangement, and that one of its very authors, Gaius Licinius Stolo, was among the first to be condemned for having exceeded the agrarian maximum; and we cannot but ask whether the legislators dealt altogether honourably, and whether they did not on the contrary designedly evade a solution, really tending to the common benefit, of the unhappy question of the domains.
We do not mean, however, to express any doubt that the regulations of the Licinian laws, such as they were, might and did substantially benefit the small farmer and the day-labourer. It must, moreover, be acknowledged that in the period immediately succeeding the passing of the law the authorities watched with at least comparative strictness over the observance of its rules as to the maximum, and frequently condemned the possessors of large herds and the occupiers of the domains to heavy fines.
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Reference address : https://www.ellopos.net/elpenor/rome/2-03-equalization-orders-aristocracy.asp?pg=28