Teenage smoking national patterns of cigarette smoking, ages 12 through 18, in 1968 and 1970.
- Rockville, Md. National Clearinghouse for Smoking and Health [1971]
- 144 p. illus.
- DHEW publication no. (HSM) 72-7508 .
- DHEW publication no. (HSM) 72-7508. .