RT Article
T1 Occupational Change and the Demand for Skill, 1940-1990
JF The American economic review
VO 83
IS 2
SP 122
OP 126
A1 Murphy, Kevin M.
A2 Welch, Finis 1938-
LA English
YR 1993
UL https://krimdok.uni-tuebingen.de/Record/1912639424