%0 Journal Article %T Foundations of Unified and General Field Theories %J International Journal of Theoretical and Mathematical Physics %@ 2167-6852 %D 2012 %I %R 10.5923/j.ijtmp.20120206.05 %X The theories of skew-symmetric differential forms, which reflect the properties of conservation laws for physical fields and material systems, allow to disclose and justify the general principles of field theories. Below we present certain of concepts that lie at the basis of unified and general field theories. %K Skew-Symmetric Differential Forms %K Conservation Laws %K Equations of Material System %K Evolutionary Relation %K Properties of Field Theories %U http://article.sapub.org/10.5923.j.ijtmp.20120206.05.html