Cell surface factors : immune deficiencies : twin studies /

Schizophrenia and manic-depressive disorder : the biological roots of mental illness as revealed by the landmark study of identical twins /

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Twin research : proceedings of the Second International Congress on Twin Studies, August 29-September 1, 1977, Washington, D.C. /

Twin research 3 : proceedings of the third International Congress on Twin Studies, June 16-20, 1980, Jerusalem /

60 minutes.

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Schizophrenia and manic-depressive disorder : the biological roots of mental illness as revealed by the landmark study of identical twins /

Psychoses of the schizophrenic spectrum in twins : a discussion of the nature-nurture debate in the etiology of "endogenous" psychoses / by Franzek, Ernst, 1953-

Schizophrenia and manic-depressive disorder : the biological roots of mental illness as revealed by the landmark study of identical twins /

Full Text (via Internet Archive)