@misc{Blauth_Jan_(1856-1920)_Dreny,
 author={Blauth, Jan (1856-1920)},
 howpublished={online},
 publisher={[s.n.]},
 publisher={I. Związkowa Drukarnia).},
 language={pol},
 type={książka},
 title={Dreny cementowe i gliniane},
 keywords={dreny cementowe, dreny gliniane},
}