2Daniel E.Hecker,David S.Frank.Employment outlook:2002-12 Occupational employment projections to 2012[J].United states department of labor,monthly labor review,2004,(2):80-105. 被引量:1
7Daniel E, Hecker, David S,et al. Employment outlook: 2002- 12 Occupational employment projections to 2012[J]. United States department of labor, monthly labor review, 2004, (2): 80-105. 被引量:1