Quarry, Ash. Communication 4 : overcoming negative behavior / [videorecording] by Ash Quarry - Mobray : Learning Resource. - 1 videotape (18 min) : sd,col. ; 1/2 in. - 18 mins ISBN: $ Subjects--Topical Terms: Interpersonal relations.Conflict management.Negativism. LC Class. No.: HD30.3 / .C76