The origins of human social relations: proceedings of a C.A.S.D.S. Study Group on "The origins of human social relations" held jointly with the Ciba Foundation, London, July 1969, being the fifth study group in a C.A.S.D.S. programme on "The origins of human behaviour"; edited by H. R. Schaffer. (Developmental sciences series)
The origins of human social relations: proceedings of a C.A.S.D.S. Study Group on "The origins of human social relations" held jointly with the Ciba Foundation, London, July 1969, being the fifth study group in a C.A.S.D.S. programme on "The origins of human behaviour"; edited by H. R. Schaffer.