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Annals of Microbiology > 2013 > 63 > 1 > 307-313
Gospodarka Narodowa. The Polish Journal of Economics > 2009 > 232 > 5-6 > 61-90
Gospodarka Narodowa > 2009 > 20 > 5-6 > 61-90
Annals of Microbiology > 2013 > 63 > 1 > 307-313
Gospodarka Narodowa. The Polish Journal of Economics > 2009 > 232 > 5-6 > 61-90
Gospodarka Narodowa > 2009 > 20 > 5-6 > 61-90