Title: Preserving the astronomical sky : proceedings of the 196th symposium of the IAU held in United Nations International Conference Centre in conjunction with UNISPACE III at Vienna, Austria, 12-16 July 1999 /
Authors: Cohen, R. J.; Sullivan, Woodruff Turner.; International Astronomical Union. 1999 :
Publisher: Published on behalf of IAU by Astronomical Society of the Pacific,
Year: 2001
Subjects: Light pollution Congresses.; Radio Interference Congresses.; Space debris Congresses