TY - BOOK ED - National Clearinghouse for Smoking and Health. TI - Teenage smoking: national patterns of cigarette smoking, ages 12 through 18, in 1968 and 1970 T2 - DHEW publication no. (HSM) 72-7508 AV - HV5745 .N29 U1 - 301.5 PY - 1971///] CY - Rockville, Md. PB - National Clearinghouse for Smoking and Health KW - Youth KW - Tobacco use KW - United States KW - Local ER -