universal law / activity systems / historical product / including even two interacting activity systems / /
Organization
Institute of Psychology / Hegel / /
Person
Wolfgang Fritz Haug / Wolff-Michael Roth / Wolfgang Köhler / Friedrich W.J. Schelling / Johann G. Fichte / Ines Langemeyer / Georg W.F. Hegel / Vygotsky / Karl Marx / Wolff-Michael Roth Ines Langemeyer / Kurt Lewin / Kurt Koffka / /