http://stacks.iop.org/0067-0049 The Astrophysical Journal Supplement Series has been published since 1953 in conjunction with The Astrophysical Journal. Designed to bring substantial, extensive support to the material found in the Journal, the Supplement Series contains many of the most frequently cited papers in astronomical literature. en-gb Copyright © IOP Publishing 1970 Thu, 01 Jan 1970 00:00:00 GMT Thu, 01 Jan 1970 00:00:00 GMT http://syndication.iop.org/about/ custserv@iop.org (Customer Services) http://images.iop.org/website-logos/ejs_logo.png http://stacks.iop.org/