Weil Joyce Research design in aging and social gerontology Quantitative, qualitative, and mixed method (Textbooks in aging series) - New York Routledge 2017 - xv,302p. cm. ISBN: UKP 44.99 Standard No.: 135990 Source: 105, 28/09/2017, Classic Book Service Textual Subjects--Topical Terms: Applied Psychology Dewey Class. No.: S38:f, Q7