TY  - BOOK
AU  - Shields, James
TI  - Monozygotic twins brought up apart and brought up together: an investigation into the genetic and environmental causes of variation in personality: James Shields
U1  - 577.4 
PY  - 1962///
CY  - London
PB  - Oxford University Press
KW  - Multiple births - Genetic factors
KW  - Twins - Personality
ER  -