The Service Economy. N.B.E.R. General Series No. 87.
Keyword(s):
Keyword(s):
Keyword(s):
1967 ◽
Vol 89
(2)
◽
pp. 203-210
◽
1996 ◽
Vol 50
(1)
◽
pp. 47-57
Keyword(s):
1863 ◽
Vol 153
◽
pp. 617-648
◽