File:Robert A. Dahl in the Classroom.jpg

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原始文件 ‎（1,675 × 2,400像素，文件大小：895 KB，MIME类型：image/jpeg）

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摘要

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描述
English: Robert A. Dahl teaching a political science class at Yale University
日期
来源 Robert Dahl family archives
作者 未知Unknown author
其他版本
Image extraction processThis file has an extracted image: Robert A. Dahl in the Classroom (cropped).jpg.
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许可协议

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This work was never published prior to January 1, 2003, and is currently in the public domain in the United States because it meets one of the following conditions:
  • its author died before 1954;
  • the death date of its author is not known, and it was created before 1904;
  • it is an anonymous work, a pseudonymous work, or a work made for hire, and it was created before 1904.

The above provisions are contained in 17 U.S.C. § 303. See also this page for more information.

Unpublished photograph from family archives with no attribution.

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