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Socio-economic sectors in Polish agriculture and their effectiveness
Ryszard Manteuffel
Acta Academiae Scientiarum Polonae , 1 /1-2 (1982) s. 45-64
Ryszard Manteuffel
Acta Academiae Scientiarum Polonae
, 1
/1-2
(1982)
s. 45-64