Sears, F. W. (1923). HEALTH OFFICER'S EXCHANGE: PSYCHOLOGY OF RURAL PUBLIC HEALTH.
Παραπομπή Chicago StyleSears, F. W. HEALTH OFFICER'S EXCHANGE: PSYCHOLOGY OF RURAL PUBLIC HEALTH. 1923.
Παραπομπή MLASears, F. W. HEALTH OFFICER'S EXCHANGE: PSYCHOLOGY OF RURAL PUBLIC HEALTH. 1923.
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