[RH FACTOR AND SCHOOL APTITUDE].
D001076:Aptitude; D001699:Biometry; D006801:Humans; D012204:Rh-Hr Blood-Group System; D012574:Schools; D013030:Spain; D013223:Statistics as Topic
D012204:Rh-Hr Blood-Group System
APTITUDE; RH FACTORS; SPAIN; STATISTICS
FACTOR RH Y APTITUD ESCOLAR.