TY  - BOOK
AU  - Shields,James
TI  - Monozygotic twins, brought up apart and brought up together : : an investigation into the genetic and environmental causes of variations i n personality / 
U1  - 155.444 
PY  - 1962///
CY  - London : 
PB  - Oxford University Press, 
KW  - Twins
KW  - Case studies
KW  - Personality
ER  -