00901nam a2200241 i 450099100361980970753620020503201842.0961217s1990 fi ||| | ||| 9519498613b1053264x-39ule_instEXGIL124086ExLBiblioteca InterfacoltàitaSibelius, Patrick469763Natural contradictions and concept of action in mechanics /Patrick SibeliusAbo :Abo Akademis,1990xiv, 188 p. ;25 cm.MeccanicaStudi.b1053264x02-04-1427-06-02991003619809707536LE002 Scien. I M 1612002000492968le002-E0.00-l- 00000.i1061176927-06-02Natural contradictions and concept of action in mechanics217349UNISALENTOle00201-01-96ma -engfi 01