4 public-domain matches

Representation Of Concepts

Cover of Concepts, Frames and Cascades in Semantics, Cognition and Ontology

Concepts, Frames and Cascades in Semantics, Cognition and Ontology

Unknown author

Cover of Représentation du monde chez l'enfant

Représentation du monde chez l'enfant

Jean Piaget

Cover of History of the World's Fair

History of the World's Fair

Benjamin Cummings Truman

Cover of Elements of political science

Elements of political science

Stephen Leacock