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The interstellar Db1s line at high resolution

Hobbs, L. M.
[Washington, D.C. : National Aeronautics and Space Administration ; Springfield, Va. : For sale by the National Technical Information Service, 1990?] 1990

A search for Earth-crossing asteroids

Taff, Laurence G., 1947- author.
Lexington, MA : Lincoln Laboratory, M.I.T. ; [Washington, D.C.] : National Aeronautics and Space Administration, [1983] 1983

Use of high-dimensional spectral data to evaluate organic matter reflectance relationships in soils

West Lafayette, IN : Laboratory for Applications of Remote Sensing, Purdue University, [1990] 1990