@article{13538, title = "International meeting on the Hexagonal cooperation in the branch of godesy : Section C - Geodesy : Memorandum : Lnáře, Czechoslovakia, November 25 - 30, 1991 ", year = "1991", note = "Res. Inst. Geod., Topogr. a. Cartogr. ; Czech Office Geod. a. Cartogr. ; Ministry Strategy Planning., 5 vol. příl., 1 sv.", }