| 000 | 00398nas a2200121Ia 4500 | ||
|---|---|---|---|
| 008 | 170101s2017 xx 000 0 und d | ||
| 044 | _aU.S.A. | ||
| 245 | 0 | _aAMERICAN Journal of Epidemiology | |
| 260 |
_bJohns Hopkins University, Scol of Hygine and public Health _aBalltimore |
||
| 270 | _aJohns Hopkins University, Scol of Hygine and public Health | ||
| 362 | _aJan - Dec,1970 | ||
| 942 |
_2ddc _cP |
||
| 999 |
_c164921 _d164921 |
||