00354nam a2200133Ia 450000500170000000800410001702000150005808200160007310000160008924500270010526000380013230000120017050000380018220250520020659.0240331s9999    xx            000 0 und d  a9559512846  a302.23bMAH  aMahendra, S 0aSanniwedhana gaweshana  aColombo bUdaya Publicationc1991  a80 p .,  aA Book of  Communication Research