Ustalenie drogi wnikania larw I stadium Elaphostrongylus cervi [Nematoda, Protostrongylidae] do zywiciela posredniego i ich rozwoj do stadium inwazyjnego
The way of penetration of first stage larvae of Elaphostrongylus cervi [Nematoda, Protostrongylidae] to the intermediate host and their development to the invasive stage