Research Discussion Paper – 1974
Equation (A.11)
∂
Y
(
)
∂
SN
dSN
+
∂
Y
(
)
∂
ST
dST
+
∂
Y
(
)
∂
DL
dDL
+
∂
Y
(
)
∂
Q
dQ
=
0
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