Fermilab-Tevatron. Results from the analysis of jet data produced in the central rapidity region of PBAR P collisions at c.m. energies 630 and 1800 GeV. Data were collected during 1994-95. Measurements of the inclusive jet cross sections, dijet mass spectrum and angular distributions are present together with the ratio of inclusive jet cross sections at 630 and 1800 GeV c.m. energies. Note that analysis of some of these data has been published earlier (PRL 82,2451 and PRL 82, 2457). The data given here are approximately 3.2% lower than in the earlier papers due to a recalculation of the integrated luminosity from new published total inelastic cross section data. Note also that the cross sections given in the recent preprint (Fermilab-Pub-00/271-E) are also slightly different. This latter (to be published in PRL) is a reanalysis with several improvements to allow the pseudorapidity range to be extended to 3.0 but loses some accuracy in the central region. One should not intermix these data (private communication from L. Babukhadia).