Harnad, ea 1976
Harnad, S. R., H. D. Steklis and J. Lancaster, 1976, eds, 'Origins of language and speech', Annals of the New York Academy of Science, 280, 1-914
Harnad, S. R., H. D. Steklis and J. Lancaster, 1976, eds, 'Origins of language and speech', Annals of the New York Academy of Science, 280, 1-914
