000 00229 a2200085 4500
020 _a9780702177101
082 _a302.2072 DUPL
100 _aDu Plooy GM
_9151073
245 _aCommunication research techniques, methods and applications
999 _c754425
_d754424
942 _w429
_xElizabeth Motloung
_y429
_zElizabeth Motloung