@article{21380, author = "Strusiński, H. and Rapport présenté á l´onzieme Assemblée Générale de ĺ Union Géodésique et Géophysique Internationale. Toronto, 3 - 14 Septembre 1957", title = "On the vertical differential refraction and the influence of temperature on a levelling instrument in short range observations. Work carried out at the Chair of Higher Geodesy of the Warsaw Institute of Technology during the years 1954 - 1957 ", year = "1957", note = "1 sv.", }