Topological analysis of the particle production in hadronic Z decays Ghez P CERN 1997 The production of charged particles, K0s and Lambdas in hadronic Z decays is measured with the ALEPH detector at LEP 1 in 2 and 3-jet events. This production is well described in the framework of the QCD Modified Leading Log Approximation assuming Local Parton Hadron Duality where the topology of the events is taken into account.+ PREPRINT