Recruiting hard-to-reach subjects: is it worth the effort? (Q72523639)
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scientific article published on 01 April 1994
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Recruiting hard-to-reach subjects: is it worth the effort? |
scientific article published on 01 April 1994 |
Statements
Recruiting hard-to-reach subjects: is it worth the effort? (English)
W M Vollmer
M L Osborne
S Hertert