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Zeszyty Naukowe ZPSB Firma i Rynek > 2014 > 2(47) > 69-80
Geomatics and Environmental Engineering > 2008 > Vol. 2, no. 2 > 13-19
Zeszyty Naukowe ZPSB Firma i Rynek > 2014 > 2(47) > 69-80
Geomatics and Environmental Engineering > 2008 > Vol. 2, no. 2 > 13-19