The proceedings contain contributed papers submitted to the IV International Workshop on Nonlinear and Turbulent Processes in Physics "NONLINEAR WORLD" (Kiev, October 9-22, 1989) and accepted by the Organizing Committee. The book is a direct reproduction of the camera-ready manuscripts presented by the authors. No corrections have been made in the texts. Volume 2 includes the following topics: problems in quantum field theory and statistical physics, nonlinear phenomena in the atmosphere and the ocean, mathematical methods, chaos and turbulence.