These proceedings consist of the 17 papers presented and analysis and discussion of same for the specialists meetings on 'Analytical and Numerical Methods for Investigation of Flow Fields with Chemical Reactions, Especially Related to Combustion' during the 43rd Meeting of the Propulsion and Energetics Panel held on 1, 2 April 1974 at Liege, Belgium. Four one half day sessions were conducted on Classical Methods for Numerical Computation of Laminar Flow and Mean Flow with Chemical Reactions, Modern Methods of Analysis of Turbulent Flames, General Methods of Analysis of Flows with Numerous Chemical Reactions, and Numerical and Analytical Methods Applied to Combustors and to the Study of Pollution.