00345nam a2200097 a 450000500170000010000160001724500910003326000440012430000200016849000590018820251203092055.0  aGrossman, J  aPlanning and evaluation of health education servicesbReport of a WHO Expert Committee  aGenevabWorld Health Organisationc1969  a32p.c26 cm. PB  aWorld Health Organization Technical Report Seriesd409