'Animals in a machine age', Harpers
Tags: 1930s; 1931; 1931-7-1; Biology; Day, Clarence; Domestication; History; Humor; Industrial relations; training; United States; Working animals; Zoology
'Legs vs. architects', Harpers
Tags: 1920; 1920-11-1; 1920s; Access for the physically handicapped; Architecture; Architecture and the aged; Day, Clarence; Engineering; New York; New York (State); Public buildings
'This simian world', Harpers
Tags: 1920; 1920-3-1; 1920s; Behavior evolution; Biology; Civilization; Day, Clarence; Evolution; Human beings; Human evolution; Origin; Social evolution
'The pandemonium of animals', Harpers
Tags: 1910s; 1912; 1912-9-1; Biology; Day, Clarence; Zoology
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