Post, Felix. The significance of effective symposium in old age : a follow-up study of one hundred patients / Felix Post. - London : Oxford Univeristy Press , 1962. - 106 p. : tables - Maudsley monographs ; no. 10. . Subjects--Topical Terms: Psychotic Disorders Geriatric Psychiatry National Library of Medicine Call No.: WT 150 / P845s