Global warming : are we entering the greenhouse century? / Stephen H. Schneider. Schneider, Stephen Henry. Global warming. Greenhouse effect, Atmospheric. Climatic changes. QC981.8.G56 S3 1990b 363.7392 SCH Originally published: San Francisco : Sierra Club Books, c1989. Includes bibliographical references (p. [306]-332) and index. New York : Vintage Books, 1990. 1990. 1990 Text xiv, 343 p. : eng