TI - THe reactions of twins PT - JOUR DP - 1929 TA - Journal of the American Medical Association pages = {612-613}, VI - 93 IP - 8 AID - 10.1001/jama.1929.02710080038016 [doi] 4100 - http://dx.doi.org/10.1001/jama.1929.02710080038016 SO - Journal of the American Medical Association August 24, 1929 93(8):612