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Books
Zur Entstehungsgeschichte der Zwillingsforschung / von Hermann Wr. Siemens.
Hermann Werner SiemensDate: 1966
Books
Identically different : why you can change your genes / Tim Spector.
Tim SpectorDate: 2012
Books
Psychiatric illnesses in identical twins / by Pekka Tienari ; [translated by Jaakko Railo].
Pekka TienariDate: 1963
Books
Twins and supertwins / by Amram Scheinfeld ; with special editing by Arthur Falek and others.
Amram ScheinfeldDate: 1968
Books
The nature and nurture of twins / by Elizabeth M. Bryan.
Elizabeth Mary BryanDate: 1983
Books
Children of the flames : Dr. Josef Mengele and the untold story of the twins of Auschwitz / Lucette Matalon Lagnado & Sheila Cohn Dekel.
Lucette LagnadoDate: 1991
Videos
The secret life of twins. Part 2.
Date: 2009
Books
Psychotic and neurotic illnesses in twins / by Eliot Slater with the assistance of James Shields. Statistical appendix by Joan May.
Eliot SlaterDate: 1953
Books
Heredity and environment in the functional psychoses / an epidemiological-clinical twin study.
Einar KringlenDate: [1967]
Books
Online
The delivery of the second fetus in labor with twins / by Charles M. Green.
Green, Charles M. (Charles Montraville), 1850-1928Date: 1884
Books
Recherches sur l'induction expérimentale de naissances gémellaires chez les bovins : experimental studies on twinning in cattle.
Date: 1970
Books
Zwillingsdermatologie : eine Studie über den Erblichkeitsgrad bei 89 Hautkrankheiten nach Untersuchung von 370 Zwillingspaaren / von Hans Niermann.
Niermann, Hans.Date: 1964
Pictures
Online
A cross-section of a pregnant uterus containing twins. Engraving after W. Smellie after J. van Rymsdyck.
Jan van RymsdykReference: 17107i
Videos
Secret life of twins.
Date: 2016
Books
Online
Verbrechen als Schicksal : Studien an kriminellen Zwillingen / von Johannes Lange.
Johannes LangeDate: 1929
Books
Exploring twins : towards a social analysis of twinship / Elizabeth A. Stewart.
Stewart, Elizabeth A., 1942-Date: [2003], ©2003
Books
Refraction and its components in twins / Arnold Sorsby, Michael Sheridan and G.A. Leary.
Arnold SorsbyDate: 1962
Pictures
Page 10: probably a scene from the Ramayana; Rama fighting his twin sons. Watercolour drawing.
Reference: 27009i
Pictures
Tamar giving birth to Pharez and Zarah aided by a midwife and many assistants. Engraving by H. Muller after M. van Heemskerck.
Maarten van HeemskerckReference: 17297i
Books
Online
Heredity and environment : a critical survey of recently published material on twins and foster children / by R.S. Woodworth ; a report prepared for the Committee on Social Adjustment.
Robert S. WoodworthDate: [1941]
Books
I'll give you the sun / by Jandy Nelson.
Jandy NelsonDate: 2015
Books
Twin studies and diagnostic issues in schizophrenia / Margit Fischer.
Fischer, Margit.Date: 1977
Books
Online
Twins : a study of heredity and environment / by Horatio H. Newman, Frank N. Freeman, Karl J. Holzinger.
Horatio Hackett NewmanDate: [1937]
Books
Growth : a study of Johnny and Jimmy / by Myrtle B. McGraw ... with a preface by Dr. Frederick Tilney and an introduction by John Dewey; drawings by Kenneth W. Breeze.
Myrtle Byram McGrawDate: [1935], ©1935
Books
Online
Measurements of twins / by Edward L. Thorndike.
Edward ThorndikeDate: [1905]

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Zur Entstehungsgeschichte der Zwillingsforschung / von Hermann Wr. Siemens.

Identically different : why you can change your genes / Tim Spector.

Psychiatric illnesses in identical twins / by Pekka Tienari ; [translated by Jaakko Railo].

Twins and supertwins / by Amram Scheinfeld ; with special editing by Arthur Falek and others.

The nature and nurture of twins / by Elizabeth M. Bryan.

Children of the flames : Dr. Josef Mengele and the untold story of the twins of Auschwitz / Lucette Matalon Lagnado & Sheila Cohn Dekel.

The secret life of twins. Part 2.

Psychotic and neurotic illnesses in twins / by Eliot Slater with the assistance of James Shields. Statistical appendix by Joan May.

Heredity and environment in the functional psychoses / an epidemiological-clinical twin study.

The delivery of the second fetus in labor with twins / by Charles M. Green.

Recherches sur l'induction expérimentale de naissances gémellaires chez les bovins : experimental studies on twinning in cattle.

Zwillingsdermatologie : eine Studie über den Erblichkeitsgrad bei 89 Hautkrankheiten nach Untersuchung von 370 Zwillingspaaren / von Hans Niermann.

A cross-section of a pregnant uterus containing twins. Engraving after W. Smellie after J. van Rymsdyck.

Secret life of twins.

Verbrechen als Schicksal : Studien an kriminellen Zwillingen / von Johannes Lange.

Exploring twins : towards a social analysis of twinship / Elizabeth A. Stewart.

Refraction and its components in twins / Arnold Sorsby, Michael Sheridan and G.A. Leary.

Page 10: probably a scene from the Ramayana; Rama fighting his twin sons. Watercolour drawing.

Tamar giving birth to Pharez and Zarah aided by a midwife and many assistants. Engraving by H. Muller after M. van Heemskerck.

Heredity and environment : a critical survey of recently published material on twins and foster children / by R.S. Woodworth ; a report prepared for the Committee on Social Adjustment.

I'll give you the sun / by Jandy Nelson.

Twin studies and diagnostic issues in schizophrenia / Margit Fischer.

Twins : a study of heredity and environment / by Horatio H. Newman, Frank N. Freeman, Karl J. Holzinger.

Growth : a study of Johnny and Jimmy / by Myrtle B. McGraw ... with a preface by Dr. Frederick Tilney and an introduction by John Dewey; drawings by Kenneth W. Breeze.

Measurements of twins / by Edward L. Thorndike.