File:Robert A. Dahl in the Classroom.jpg

DescriptionRobert A. Dahl in the Classroom.jpg English: Robert A. Dahl teaching a political science class at Yale University Date 8 May 2014, 06:47:17

DescriptionRobert A. Dahl in the Classroom (cropped).jpg English: Robert A. Dahl teaching a political science class at Yale University Date 8 May 2014

work is in the public domain in the United States because it was published in the United States between 1929 and 1977, inclusive, without a copyright

This work is in the public domain because it was published in the United States between 1978 and March 1, 1989 without a copyright notice, and its copyright