Quantum chromodynamics

These proceedings mark the fourth workshop on Quantum Chromodynamics held at the American University of Paris during the week of 1-6 june 1998. 8 half-day sessions, each dealing with a distinct theme within the general QCD framework. The different topics treated are: 1) diffractive production and the pomeron, 2) high energy scattering and the pomeron, 3) thermal and other fluctuations, 4) hadrons physics, 5) strings, branes and duality, 6) conventional and unconventional QCD, 7) media effects in scattering, 7) media effects, statistics and spin correlations in QCD, 8) lattice methods, 9) lattice methods and QCD theory, and 10) new and gauge-invariant methods in QCD/Quantum field theory