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347. Probability of vertical penetrable optical path for high intensity, high contrast optical targets; [by R. G. Quayle, J. M. Meserve, H. L. Crutcher]. v. 3. South and Central America, Carribbean area, Australia, New Zealand, New Guinea, Philippines, and Indonesian Archipelago, pt. B, Maps.

350. Skywarn, seconds save lives.