| 000 | 00401nam a2200145Ia 4500 | ||
|---|---|---|---|
| 008 | 130223s9999 xx 000 0 und d | ||
| 100 | _aCrider, D.M. | ||
| 245 | _aLocating people in longitudinal studies : A research report and suggested guidel | ||
| 260 | _aPennsylvania | ||
| 260 | _c1972 | ||
| 300 | _a30 p. | ||
| 440 | _aNo. 778; Pennsylvania Agricult | ||
| 901 | _pS21011 | ||
| 942 |
_cB _2udc |
||
| 999 |
_c126820 _d126820 |
||