The 3rd century saw a progressive reduction in the size of the legions and even some auxiliary units.
The progressive reduction of such barriers has been a leading factor behind the postwar economic growth in the West.
One of the best documented effects of high altitude is a progressive reduction in birth weight.
A progressive reduction in the rate of inward migration.
In the budget for 1987-88, the Government has cut the fiscal deficit for the third consecutive year and remains committed to further progressive reduction.
Both sides, he said, could accept the idea of "substantial progressive reductions" in farm subsidies in the long term.
The summit leaders agreed that their countries would make "substantial progressive reductions" in their farm supports.
There was also a progressive reduction in the size of the legions.
The progressive and proportional reduction of conventional weapons.
For the long term, Australia advocates "concerted, progressive and significant reductions in agricultural support and protection," the paper said.