Nov. 3-6 American Vacuum Society symposium, Convention Center. Contact: Marion Churchill. Expected attendance: 5,000

Nov. 5-7 National Arborist Association tree care expo, Convention Center. Contact: Carol Crossland. Expected attendance: 2,000

Nov. 13-14 Lumbermen's Merchandising Corp. purchasing meeting, Hyatt Regency. Contact: Kathleen Botcosk, 215-293-7048. Expected attendance: 350

Nov. 16-19 Marine Technology Society workshop, Convention Center. Contact: Martin Finerty, 202-775- 5966. Expected attendance: 2,000

Pub Date: 11/02/98