Origin of glass deposits in lunar craters.

country to the economic activity existing in developed countries. Incidentally, my planning office has just finished a feasibility study for an area in the Amazon Basin where 500 families may be settled in 14,400 hectares (1 hectare = 10,000 square meters), with a loan of $16,000 (United States dollars) per family extending over a 10-year period. After 10 years each family will have paid the loan, earned $44,000, and will continue to earn $10,000 per year. In consequence, one question remains open: Shall underdeveloped countries appeal to birth control, an issue greatly discussed in the United States (2). or shall they make every effort possible to increase the numerator of the income-per-head ratio, as they seek