Tarkowski, R. (2021) “Polish naturalists: Konstanty Jelski, Jan Sztolcman and Jan Kalinowski and their contribution in Peru’s nature research in the second half of the 19th and the earliest of the 20th century”, Studia Historiae Scientiarum, 20, pp. 569–599. doi: 10.4467/2543702XSHS.21.016.14047.