TY - BOOK AU - Dale,Orren TI - Human behavior and the social environment: social systems theory SN - 020544606X AV - HV40 .H7813 2006 U1 - 361.32 22 PY - 2006/// CY - Boston PB - Pearson/Allyn and Bacon KW - Social service KW - Local KW - Human behavior KW - Social systems KW - Mathematical models N1 - Includes bibliographical references and index ER -