Gallup, George Horace, 1901- The Gallup Poll : public opinion 1935-1971/ George H. Gallup - New York : Random House, 1972 - 777 p. ; 24 cm. ISBN: 0394472705 LCCN: 77-039867 Subjects--Topical Terms: Public opinion--United States Subjects--Geographic Terms: United States--Public opinion