"Environmental monitoring Congresses." . . "AGU Chapman Conference on Geodetic VLBI--Monitoring Global Change (1991 : Washington, D.C.)" . . . . "Conference proceedings"@en . . . . . . "Conference papers and proceedings"@en . . . . . . . . . . . . . . . . "Proceedings of the AGU Chapman Conference on Geodetic VLBI-- Monitoring Global Change, American Geophysical Union, Washington, D.C., April 22-26, 1991"@en . . . . "American Geophysical Union." . . "Geodesy Congresses." . . "Very long baseline interferometry Congresses." . . "United States. National Ocean Service." . . . . "Very long baseline interferometry." . . "Environmental monitoring." . . "Geodesy." . .