TY - BOOK AU - Seligman,Martin E.P. TI - Helplessness: on depression, development, and death T2 - A Series of books in psychology SN - 0716707519 AV - BF575.H4 S44 1975 PY - 1975/// CY - San Francisco PB - W. H. Freeman KW - Depression, Mental KW - Helplessness (Psychology) N1 - Includes indexes; Bibliography: p. 206-235 ER -