Media type: E-Article Title: Copyright and Public Domain Policy Contributor: Benjamin, Curtis J.; Knox, William T.; Henry, Nicholas L. Published: American Association for the Advancement of Science, 1975 Published in: Science, 188 (1975) 4191, Seite 886-888 Language: English ISSN: 0036-8075; 1095-9203 Keywords: Letters Origination: Footnote: