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The challenges of demographics: introduction and overview |
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| Authors: | Richard R Verdugo Richard R Young |
| Institution: | (1) National Education Association, 1201 16th Street, NW, Washington, DC 20036-3290, USA;(2) Department of Logistic, The Pennsylvania State University, Pennsylvania, PA, USA |
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| 本文献已被 SpringerLink 等数据库收录！ | |