Papers presented at the 89th Symposium of the International Astronomical Union held in Uppsala, 1978.
Organised by the IAU in cooperation with the International Association of Geodesy and the International Union of Geodesy and Geophysics.
Refractional influences in astrometry and geodesy. ISBN 9027710376. Published by Reidel in 1979. Publication and catalogue information, links to buy online and reader comments.