00722nam0-22002411i-450-990001262530403321000126253FED01000126253(Aleph)000126253FED0100012625320000920d????----km-y0itay50------baengLagrangian formalism and symmetry lawsde r GourdinNew York [etc.]Academic PressParisGordon and Breach ScienceDocuments on modern physicsGourdin,Michel47312ITUNINARICAUNIMARCBK99000126253040332129-D-2318151MA1MA1Lagrangian formalism and symmetry laws381127UNINA