@misc{Czubla_Piotr_Rock_2013,
 author={Czubla, Piotr and Strzyż, Piotr},
 volume={26},
 copyright={Rights Reserved - Free Access},
 address={Łódź},
 journal={Fasciculi Archaeologiae Historicae},
 howpublished={online},
 year={2013},
 publisher={Institute of Archaeology and Ethnology of Polish Academy of Sciences},
 publisher={Polish Academy of Sciences. Łódź Branch},
 language={eng},
 type={Text},
 title={Rock materials in the manufacture of cannonballs in Poland – selected examples},
 URL={http://www.rcin.org.pl/Content/50106/PDF/WA308_68311_PIII368_Rock-materials-in_I.pdf},
 keywords={archaeology -- journals, history -- journals},
}