Pretesting in Health Communications, methods, examples and resources for improving health messages and materials, US dept of Health and human services…

  • Health Education Council
Date:
1984
Reference:
SA/HEC/B/7/17

Licence: In copyright

Credit: Pretesting in Health Communications, methods, examples and resources for improving health messages and materials, US dept of Health and human services…. Source: Wellcome Collection.

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