'Math even parents can understand', Harpers

Tags: 1950s; 1958; 1958-4-1; Drucker, Peter Ferdinand; Education; Mathematical ability; Mathematics; Maths; Other; Parent participation; Study and teaching; United States

'Mathematical', Harpers

Tags: 1910s; 1912; 1912-8-1; Humor; Mathematical ability; Medicine; Other; Spouses; United States

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