00342cam a22001217a 4500008004000000082001400040100001900054245006900073260002700142300000900169650002100178700002100199180718b1952   xxu||||| |||| 00| 0 eng d  aI54 H227p  aHarlow, Rex F.  aPractical public relationscby Rex F. Harlow and Marvin M. Black  aNew YorkbHarperc1952  a422p  aPublic relations  aBlack, Marvin M.