18.
Report on the Geodetic Activities of the Thai National Committee on Geodesy and Geophysics
/ IUGG XX General Assembly IAG, Vienna, August 11-24, 1991
Bangkok: University Bangkok, 1991
Signatura: K46839
19.
Report on the Geodetic Activities in the years 1987 to 1991. Switzerland. Swiss Geodetic Commission and Federal Office of Topography
/ IUGG XX General Assembly IAG, Vienna, August 11-24, 1991
Zürich: Swiss Geodetic Commission and Federal Office of Topografy, 1991
Signatura: K46848
20.
Report of the International Gravity Commission to the General Assembly of the International Association of Geodesy
/ IUGG XX General Assembly IAG, Vienna, August 11-24, 1991
Vienna: IAG Vienna, 1991
Signatura: K46816
21.
Report of the IGG - Working Group 5: Monitoring of Non-tidal Gravity Variations
/ Poitevin, C. ; IUGG XX General Assembly IAG, Vienna, August 11-24, 1991
Bruxelles: CGI Bruxelles, 1991
Signatura: K46825
22.
Report of the Geodetic Works in Japan during the Period from January 1987 to December 1990. National Report to the 20 General Assembly, Vienna, Austria, 11-24 August, 1991
/ IUGG XX General Assembly IAG, Vienna, August 11-24, 1991
Tokyo: The National Commettee for Geodesy in Japan, 1991
Signatura: K46846
23.
Report of IAG Section 3. Determination of the Gravity Field. During the Period from September 1987 to August 1991
/ IUGG XX General Assembly IAG, Vienna, August 11-24, 1991
Vienna: IAG Vienna, 1991
Signatura: K46821
24.
Report 1987 - 1990 of the Nordic Sub-commission of the Commission on Recent Crustal Movements
/ IUGG XX General Assembly IAG, Vienna, August 11-24, 1991
Helsinki: Geod. Inst., 1991
Signatura: K46818
25.
Rapport quadriennal 1987 - 1990. Comité National Français de Géodésie et de Géophisique
/ IUGG XX General Assembly IAG, Vienna, August 11-24, 1991
Paris: Acad. des Sciences, 1991
Signatura: K46851
26.
Rapport National. Tunisie
/ Hamouda, Ben ; IUGG XX General Assembly IAG, Vienna, August 11-24, 1991
Tunis: Office Topogr., Cartogr. Tunis, 1991
Signatura: K46838
27.
Rapport national de l'Algerie
/ IUGG XX General Assembly IAG, Vienna, August 11-24, 1991
Hussein-Dey: Inst. Nat. de Cartogr. Hussein-Dey, 1991
Signatura: K46859