TY - GEN AU - Welford, A.T. TI - Ageing and human skill PY - 1958/// CY - London PB - Nuffield Foundation KW - Aging KW - Age factors in disease KW - Development biology KW - Gerontology KW - Humanology N1 - Includes index; "WEEDED-OUT-2009" (R-16, s.n.-152) ER -