Jean Piaget : consensus and controversy / edited by Sohan Modgil and Celia Modgil ; finale incorporating Jean Piaget's contemporary thinking by Bärbel Inhelder.

Robert K. Merton : consensus and controversy / edited by Jon Clark, Celia Modgil, Sohan Modgil.

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Sohan Modgil

Works from the collections

Jean Piaget : consensus and controversy / edited by Sohan Modgil and Celia Modgil ; finale incorporating Jean Piaget's contemporary thinking by Bärbel Inhelder.

Robert K. Merton : consensus and controversy / edited by Jon Clark, Celia Modgil, Sohan Modgil.