retrospective
1.retrospective study
2.retrospective search
4.The legislation was made retrospective.
5.The tax ruling have retrospective effect.
6.Retrospective analysis of 1389 cesarean sectiona
7.Postoperative Infections of CNS: A Retrospective Study
9.Retrospective Investigation of fat newborn in Shenyang
10.a retrospective review of an artist's work.
