"ASTM publication code number (PCN) 04-011150-16"--Vol. 2, t.p. Vol. 1 contains papers presented at the 1st Symposium on Use of Plants for Toxicity Assessment, held in Atlanta, Ga., Apr. 19-20, 1989, and sponsored by ASTM Committee E-47 on Biological Effects and Environmental Fate and its Subcommittee E47.11 on Plant Toxicity. Vol. 2 contains papers presented at the 2nd Symposium on Use of Plants for Toxicity Assessment, held in San Francisco, Calif., Apr. 23-24, 1990. Vol. 2 edited by Joseph W. Gorsuch and others. Includes bibliographical references and indexes.