00399nam a2200145Ia 4500008004100000020000900041040001600050041001200066082001500078100002200093245007200115250001200187260003700199300001700236230917s9999||||xx |||||||||||||| ||und||  cDM21  e14631aMAIN  aEnglish  a301.1 A24R  aAnderson, Ralph E 0aHuman behavior in the social environment: A social systems approach  a2nd ed.  aChicagobAldine Publishingc1978  aviii, 199 p.