00616nam a2200253 a 4500 172658 172658 20190602105949.0 190602b my ||||| |||| 00| 0 eng d 0075571137 PPAK PPAK 378.170281 378.170281 BEN G Bennett, J. Michael Four powers of communication New York McGraw-Hill 1991 122 p. 23 cm. rdacontent text rdamedia unmediated rdacarrier volume Study method of ddc B 0 0 PPAK G 1997-07-20 378.170281 BEN A00033393 2019-05-20 00:00:00 B