134. Garfield, Eugene. "Review of SDC Report on “A System Study of Abstracting and Indexing in the United States ‘”. Presented at the Annual Meeting of the National Federation of Science Abstracting and Indexing Services. Philadelphia, Pennsylvania, 1967 March 29, 1967

134. Garfield, Eugene. "Review of SDC Report on “A System Study of Abstracting and Indexing in the United States ‘”. Presented at the Annual Meeting of the National Federation of Science Abstracting and Indexing Services. Philadelphia, Pennsylvania, 1967 March 29, 1967, Box: 91, Folder: 41. Eugene Garfield Papers, 2009-036. Science History Institute Archives. https://sciencehistory.libraryhost.com/repositories/3/archival_objects/20914 Accessed October 18, 2024.