Survey of smoking-prevention education efforts in elementary schools--Washington State, 1989.
D000293:Adolescent; D001294:Attitude to Health; D002648:Child; D002675:Child, Preschool; D006266:Health Education; D006291:Health Policy; D006801:Humans; D000074606:Smoking Prevention; D013334:Students; D013663:Teaching; D013664:Teaching Materials; D014861:Washington