Plate, p. 628 · America Settentrionale

Vol. I (1948) · full-page plate
Percentages of the total population : 1. Less than 1 2. from 1 to 5 3. from 5 to 10 4. from 5. from 25 to 50 6. from 50 to 75 7. from 75 to 90 8. over
Percentages of the total population : 1. Less than 1 2. from 1 to 5 3. from 5 to 10 4. from 5. from 25 to 50 6. from 50 to 75 7. from 75 to 90 8. over

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