000 00308nam a2200121Ia 4500
100 _aTurner, Jeffrey S. & Helms, Donald B.
020 _a0-7216-8936-1
942 _cBK
245 _aLife span development
260 _aW. B. Saunders company, Philadelphia
_c1979
082 _a137 Tur/Hel
300 _axiv,541p
999 _c19924
_d19924