'Sweet and Low', Colliers Weekly
1930s; 1931; 1931-8-1; Flynn, John T.
1930s; 1931; 1931-8-1; Anecdotes; Behavior; Biology; Blue-and-yellow macaw; Eckstein, Gustav; Human-animal relationships; Ornithology; United States; Zoology
'The vital importance of eugenics', Harpers
1930s; 1931; 1931-8-1; Biology; Degeneration; Eugenics; Genetics; Heredity; Human evolution; Huxley, Julian; Social aspects
'Townless highways for the motorist', Harpers
1930s; 1931; 1931-8-1; civil engineering; Engineering; Express highways; Highway planning; MacKaye, Benton; Mumford, Lewis; Traffic engineering; United States
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