Recycled Papers
http://www.stcboston.org/archives/articles/recycle.shtml

Boston Broadside
1992

Abstract:

The demand for recycled paper is on the rise and more and more paper manufacturers are producing recycled paper in the same categories and range of choices as virgin stock. However, because of the variations and inconsistencies in the raw materials used, paper that contains recycled fiber tends to he at the middle to lower quality levels of each paper grade.