General Note: PredicastsPopular magazine review 0740-3763 1984-GeoRef 0197-7482Environment abstracts 0093-3287Energy information abstracts 0147-6521Bibliography of agriculture 0006-1530Readers' guide to periodical literature 0034-0464Readers' guide abstracts (microform) 0886-0092Magazine index 1980-General science index 0162-1963Canadian periodical index 0008-4719Abridged readers' guide to periodical literature 0001-334XNone published in Sept. and Oct. 1991.Publisher varies, 1980-"The newsmagazine of science."