title: Twin research 4. Proceedings of the Fourth International Congress on Twin Studies. London: 28 June-1 July 1983. Part B: Twin psychology and behavior genetics.
mesh_terms: D004200:Diseases in Twins / Q000523:psychology*; D005260:Female; D005824:Genetics, Behavioral; D006801:Humans; D011247:Pregnancy; D014427:Twins / Q000523:psychology*