Description
Published:Vol. 241, no. 1300 (July 23, 1990)-
Item Description:Refereed/Peer-reviewed
Some issues also have a theme title.
Publication Frequency:Twice monthly, 1998-
Format:Master and use copy. Digital master created according to Benchmark for Faithful Digital Reproductions of Monographs and Serials, Version 1. Digital Library Federation, December 2002.
Mode of access: World Wide Web.
ISSN:14712954