'Drowning in oil', Harpers
Tags: 1930s; 1931; 1931-10-1; Carlson, Avis D.; Economic conditions; Energy Engineering; Engineering; Oil industry workers; Overproduction; Petroleum industry and trade; Petroleum products; Prices; United States
'The geometry of mind', Harpers
Tags: 1930s; 1931; 1931-10-1; Gestalt psychology; Medicine; Murphy, Gardner; Psychology, Psychiatry and Psychotherapy
'Think of the stars', Harpers
Tags: 1930s; 1931; 1931-10-1; Astronomy and Astrophysics; Physics; Ross, Virgilia Peterson
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