Do Doctoral Students' Financial Support Patterns Affect Their Times-to-Degree and Completion Probabilities
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Projections of forthcoming shortages of Ph.D.s abound. Part of the reason is that American college graduates are much less likely to receive doctorates today than thcy were 20 years ago. Two important factors in this decline may be the increase in the length of time necessary for doctorate students
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美国国家经济研究局创建时间：
1992-05-01
