| 000 | 00527nam a2200181Ia 4500 | ||
|---|---|---|---|
| 008 | 160601s9999 xx 000 0 und d | ||
| 100 |
_aNichols, John Benjamin _923378 |
||
| 245 | _aNumerical proportions of the sexes at birth | ||
| 260 | _aNew York | ||
| 260 | _bKraus reprint co. | ||
| 260 | _c1976 | ||
| 300 | _a299p.; 22cm. | ||
| 650 |
_aBirth rations _923379 |
||
| 650 |
_aDeath rates _920644 |
||
| 650 |
_aFamilies livings _923380 |
||
| 650 |
_aNumerical propartion - sexes birth _923381 |
||
| 650 |
_aSocial problem _9119 |
||
| 999 |
_c7748 _d7748 |
||