The Editor Looks Back Over Fifty Years of the Journal
Copyright for articles published in this journal is retained by the authors, with first publication rights granted to the journal. By virtue of their appearance in this open access journal, articles are free to use, with proper attribution, in educational and other non-commercial settings. The author has agreed to the journal author's agreement.
As of Vol 50, No 2 (1988), all articles in this journal are licensed under aCreative Commons Attribution-Noncommercial-NoDerivs 4.0 United States License