| 000 | 00331nam a2200109Ia 4500 | ||
|---|---|---|---|
| 008 | 160509s9999 xx 000 0 und d | ||
| 020 | _a92-4-170086-6 | ||
| 245 | _aMental Retardation: Meeting challenge | ||
| 260 |
_bWorld Health Organization _c1985 |
||
| 300 | _a45+102+55+102+41+106p. | ||
| 650 | _aMental Retardation: Meeting challenge | ||
| 999 |
_c3887 _d3887 |
||