 | "Zamki na wodzie" (popular science, about beavers) 1947: "Najpospolitsze gryzonie i ich zwalczanie" ("Cost Common Rodents and the Fight against Them") (with... 5 KB (568 words) - 19:37, 22 February 2024 |
| "Zamki na wodzie" (popular science, about beavers) 1947: "Najpospolitsze gryzonie i ich zwalczanie" ("Cost Common Rodents and the Fight against Them") (with... 5 KB (568 words) - 19:37, 22 February 2024 |