Title: Ratios of Multijet Cross Sections in pbarp Collisions at sqrt{s}=1.8 TeV Link to paper if available: Phys. Rev. Lett. 86, 1955 (2001), http://arxiv.org/abs/hep-ex/0009012. Session of First Preference: Hard High Energy QCD and Structure Functions Session of Second Preference: Test of the Standard Model LP Session: QCD Phenomenology Abstract: We report on a study of the ratio of inclusive three-jet to inclusive two-jet production cross sections as a function of total transverse energy in pbarp collisions at a center-of-mass energy sqrt{s}=1.8 TeV, using data collected with the DZero detector during the 1992-1993 run of the Fermilab Tevatron Collider. The measurements are used to deduce preferred renormalization scales in perturbative O(alpha_s^3) QCD calculations in modeling soft-jet emission. Submitted: 9 April 2001