Youth smoking in the U.S. : evidence and implications
| Egile nagusia: | |
|---|---|
| Beste egile batzuk: | |
| Formatua: | Liburua | 
| Hizkuntza: | English | 
| Argitaratua: | Cambridge
          National Bureau of Economic Research
    
        2000. | 
| Saila: | NBER working paper series
              no.7780 | 
| Gaiak: |