000			00292nam a2200109Ia 4500
008			220117s9999||||xx |||||||||||||| ||und||
040			_cIAB
082			_a158 BID
100			_aBiddle, Bruce J.
245		0	_aRole Theory: Expectations, Identities, And Behaviors.
260			_bCademic Press, _c1979
999			_c31742 _d31742