Library VÚGTK 2 records found  Search took 0.00 seconds. 
1. General Report. Determination of Latitude, Longitude and Azimut 1954 - 1957 / Roelofs, R. ; For presentation at the 11th General Assembly of the IGGU Toronto, Canada - September 1957
B. m.: b. n., 1957
Signatura: K17774
2. Astronomy Applied to Land Surveying / Roelofs, R.
Amsterdam: N.V. Wed. J. Ahrend & Zoon, 1950
Signatura: 19085

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