Paul,
thank you for your quick reply.
I understand and will read your articles you suggsted [1520].
I think your testing the proportionality of price/value is
valid for your purpose in the paper. I imagine the slight
upward disparity of the slopes and the nagative constants
in those four cases come from exclusion of depreciation
which may be relatively larger in large mechanic industries.
regards,
Iwao
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Iwao Kitamura
E-mail: ikita@st.rim.or.jp