I thank you very much for your help, Michael W. and Paul C.
But, I'm a bit confusing.
Paul, do you mean there's no distinction in English such
as Engels insisted ? Do you see no difference in nuances
in using "work" and "labor"?
Iwao
ikita@st.rim.or.jp
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Iwao Kitamura
mailto: ikita@st.rim.or.jp