000 00377cam a22001451 4500
082 _a155.4
_bOLS
100 1 _aOlson, Willard Clifford
245 1 0 _aChild development /
_cby Willard C Olson
250 _a2d ed.
260 _aBoston:
_bHeath and company,
_c1959.
300 _a497 p.:
_billus.
504 _aIncludes bibliography.
650 0 _aChild Psychology
942 _cBK
999 _c499988
_d499988