000			00388nam a2200145Ia 4500
005			20190207180024.0
008			190207s9999 xx 000 0 und d
020			_a0030577462
041			_aeng
082			_a155.4
245	0	0	_aExploring child behavior. _cHelms, Donald B.; Turner, Jeffrey S.
260			_aNew York _bHolt, Rinehart and Winston _c1981
300			_a539 p.
942			_cBK
999			_c51991 _d51991