00710nam0-22002531i-450-990001020490403321000102049FED01000102049(Aleph)000102049FED01000102049--------d--------km-y0itay50------baeng<<The >>Variational Principles of MechanicsC. LanczosTorontoUniversity of Toronto Press1957Meccanica classica531Lanczos,Cornelius27778ITUNINARICAUNIMARCBK99000102049040332124-005534FI1FI1Variational principles of mechanics192242UNINA00680nam0-22002771i-450-99000073358040332120001010000073358FED01000073358(Aleph)000073358FED0100007335820001010d--------km-y0itay50------baitay-------001yyMichael KurzGeorg LillBerlinHubsch1929XV p.27 cmLill,Georg36856ITUNINARICAUNIMARCBK990000733580403321MON B 16897FARBCFARBCMichael Kurz322767UNINAING01