Analisis peranan departemen corporate communication dalam melakukan sosialisasi nilai perusahaan melalui buletin internal perusahaan : studi deskriptif mengenai nilai perusahaan PT Darya-Varin Laborotorim Tbk = Analysis the role of the corporate communication department in conducting the company's value through the internal communication : descriptive study about the socialization of the company value of PT Darya-varia Laboratoria Tbk - Bangun, Cendera Rizky Anugrah, author (2012)