Berry has also taught numerous courses for TAPPI and the Pulp and Paper Technical Association of Canada (PAPTAC), and chaired the 2000 International Pulp Bleaching Conference in Halifax Canada.
Berry has also taught numerous courses for TAPPI and the Pulp. Berry has also taught numerous courses for Paper Technical Association of Canada (PAPTAC). Berry chaired the 2000 International Pulp Bleaching Conference in Halifax Canada.