Zwillingsforschung: Vererbungslehre 

Ll1585 
Koch, Gerhard: Results ofthe 40-Year, Longitudinal Study of 
aSeries ofTwins ofBerlin <450 Monozygotic and Dizygotik 
Twin Pairs>. [Mit Fig. u. Tab.] -New York: Liss 1981. S. 
201-209.8° 
Aus: Twin Research 3: Epidemiological and Clinical Studies.