KITT PEAK NATIONAL OBSERVATORY [33]

[Corresp: Helmut A. Abt; N. U. Mayall; Beverly T. Lynds; James M. Miller; A. Keith Pierce. Incl mss. by ISB: "A Method for Locating the Elevation of the Turbulent Layers in the Atmosphere That Cause 'Seeing;' "A Proposed Method of Measuring the Height of Seeing Disturbances;" "Investigations of Air Turbulence and Its Effect on Seeing, II {w/ folded diagram}"]