Bloomsbury Publishing Plc Sivumäärä: 153 sivua Asu: Kovakantinen kirja Painos: New edition Julkaisuvuosi: 1981, 27.02.1981 (lisätietoa) Kieli: Englanti
This study is based on the following premises: human beings differ in their physiological reactions to their different environments and consequently differ in appearance; individuals who resemble each other in observable characteristics tend to be grouped together geographically; therefore, races exist in man as in any other species.