| 000 | 00524nam a2200181Ia 4500 | ||
|---|---|---|---|
| 008 | 180116s1973 xxu||||| |||| 00| 0 eng d | ||
| 082 |
_aWM300 _bEHL |
||
| 100 | _a Ehlers Walter H., Krishef Curtis H., Prothero Jon C. | ||
| 245 |
_aIntroduction to mental retardation _ba programmed text |
||
| 250 | _a2nd ed. | ||
| 260 |
_aColumbus _bCharles E. Merrill Publishing _c1973 |
||
| 300 |
_a384 p. _b25 cm. |
||
| 440 |
_a _v |
||
| 500 | _a | ||
| 520 | _a Mental Retardation | ||
| 650 | _aMental Retardation | ||
| 906 |
_a5081 _b _c |
||
| 999 |
_c18634 _d18634 |
||