Newman, Horatio Hackett,  1875-, <br/><br/>
Twins :  A study of heredity and environment / 
By horatio h. Newman, Frank n. Freeman and Karl j. holzinger. 
 - 369 páginas 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Gemelos<br/>Herencia<br/>Seres humanos--Efectos ambientales
<br/><br/><label>LC Class. No.: </label>GN295.T9  / N47