Author J. Kopiński

 
ORIGINAL PAPER
 

Economic and structural evaluation of selected organic farms

Journal of Research and Applications in Agricultural Engineering 2006;51(2):94-103
 
ORIGINAL PAPER
 

Evaluation of economic and environmental effects of conversion from conventional into organic farming system

Journal of Research and Applications in Agricultural Engineering 2009;54(3):103-107
 
eISSN:2719-423X
ISSN:1642-686X
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