00324nam a2200109 a 450000500170000002000150001708200200003210000420005224500740009426000290016830000170019720251203091648.0  a0803949979  a613.07,bD, bac  aBacker, Thomas E., Rogers, Everett M.  aOrganizational aspects of health communication campaigns: what works?  aNewbury ParkbSagec1993  ax,250p, 22cm