search query: @author Schaefer, W. / total: 5
reference: 4 / 5
| Author: | Schaefer, W. |
| Title: | Readers per copy of trade publications. |
| Journal: | European Research
1986 : VOL. 14:4, p. 198-201 |
| Index terms: | READERSHIP SURVEYS |
| Language: | eng |
| Abstract: |
SCIMA