Zdenek Kopal's Binary Star Legacy formatIsbn:Hardcover 9781402031311 and executing decisions in organizations 9783642434266 and executing decisions in organizations there was a vigorous public debate in New Brunswick about the ecological and public h~alth impacts of the annual spray program for the control of defoliation of spruce and fir trees by the spruce budworm An international conference entitled "Zdenek Kopal's Binary Star Legacy" was held on the occasion of the late Professor Kopal's 90th birthday in his home town of Litomyšl Czech Republic and dedicated to the memory of one of the leading astronomers of the 20th century Contributions to this conference included praise of the achievements of a great astronomer and personal reminiscences brought forward by Kopal's former students and colleagues