7Spofford A R. Binding and preservation of books [ M ]// Bureau of Education. The Public Library in the United States (Special Report, Part I). Washington : Government Printing Office, 1876.
8Spefford A R Periodical Literature and Society Publications [ M ]// Bureau of Education. The Public library in the United States (Special Report, Part I). Washington: Government Printing Office, 1876.
9Spofford A R. Works of reference for libraries [ M]// Breau of Education. The Public Library in the United States (Special Report, Part I). Washington : Government Printing Office, 1876.
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