@misc{Machnik_Jan_(1930–_)_Survey_1969,
 author={Machnik, Jan (1930– )},
 volume={21},
 editor={Polska Akademia Nauk. Instytut Archeologii i Etnologii},
 editor={Polska Akademia Nauk. Instytut Historii Kultury Materialnej},
 copyright={Rights Reserved - Free Access},
 address={Wrocław},
 journal={Sprawozdania Archeologiczne},
 howpublished={online},
 year={1969},
 publisher={Zakład Narodowy im. Ossolińskich},
 language={eng},
 type={Text},
 title={Survey of Investigations of the Stone and Early Bronze Ages in Poland in 1968},
 URL={http://rcin.org.pl/Content/24277/PDF/WA308_37016_P243_SURVEY_I.pdf},
 keywords={Stone Age-early Bronze Age -- Poland, Stone Age-early Bronze Age cultures, Stone Age-early Bronze Age settlement, review of archaeological sites -- Poland},
}