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Literature DB >> 6625046

Pretesting of questions in visual acuity surveys.

Abstract

Source DB: PubMed Journal: Am J Public Health ISSN： 0090-0036 Impact factor: 9.308

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2 in total

Authors: R Hiller; D E Krueger
Journal: Am J Public Health Date: 1983-01 Impact factor: 9.308

Authors: D H Stone; D J Shannon
Journal: Br Med J Date: 1978-09-23

2 in total