@misc{Birkenmajer_Krzysztof_Lower_1967,
 author={Birkenmajer, Krzysztof},
 volume={R. 32},
 copyright={Creative Commons Attribution BY 3.0 PL license},
 address={Kraków},
 journal={Protection of Nature},
 howpublished={online},
 year={1967},
 publisher={Nature Protection Research Centre of the Polish Academy of Sciences},
 publisher={Państwowe Wydawnictwo Naukowe},
 language={pol},
 title={Lower Silesian basalts as monuments of inanimate nature},
 type={Text},
 URL={http://www.rcin.org.pl/Content/240722/KR038_275989_r1967-r32_OP-Brikenmajer-225-276.pdf},
 keywords={basalts, Lower Silesia (Poland)},
}