| 000 | 00391nam a2200145Ia 4500 | ||
|---|---|---|---|
| 008 | 130223s9999 xx 000 0 und d | ||
| 080 | _a333.78:301.15 | ||
| 100 | _aMallins, G.W., Haywood, J.L. | ||
| 245 | _aUnobtrusive observation : A visitor study technique | ||
| 260 | _aWooster | ||
| 260 | _c1984 | ||
| 440 | _aNo. 280; Ohio Agricultural Res | ||
| 901 | _pS37286 | ||
| 942 |
_cB _2udc |
||
| 999 |
_c136083 _d136083 |
||