The Fugitive Literature of Acid Rain: Making Use of Nonconventional Information Sources in a Vertical File

Acid rain was a little-known issue ten to fifteen years ago. Only a relatively small group of scientists seeking an explanation for the changes they observed in the environment were concerned with the problem. Today acid rain is recognized as an environmental problem of global proportions. Governments at all levels are moving to develop policies addressing the issue. As the topic has expanded from the scientific to the political arena, the public has become increasingly involved, and information sources have proliferated.