00710nam0-22002531i-450-990001020490403321000102049FED01000102049(Aleph)000102049FED01000102049--------d--------km-y0itay50------baeng<<The >>Variational Principles of MechanicsC. LanczosTorontoUniversity of Toronto Press1957Meccanica classica531Lanczos,Cornelius27778ITUNINARICAUNIMARCBK99000102049040332124-005534FI1FI1Variational principles of mechanics192242UNINA