British Psychological Society & Vernon, P. E. (1957). Secondary school selection: A British Psychological Society inquiry. Methuen.
Dyfyniad Arddull ChicagoBritish Psychological Society and Philip E. Vernon. Secondary School Selection: A British Psychological Society Inquiry. London: Methuen, 1957.
Dyfyniad MLABritish Psychological Society and Philip E. Vernon. Secondary School Selection: A British Psychological Society Inquiry. Methuen, 1957.
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