[SCIENCE]. A pair of books on scientific subjects. Including: ROBB, Alfred A. (1873-1936). A Theory of Time and Space. Cambridge: Cambridge University, 1914. 8vo. Publisher?s full blue cloth, boards double-ruled in blind, spine lettered in gilt (binding rubbed, creased, soiled, binding skewed, text toned, endleaves foxed). FIRST EDITION. An early title on Relativity. [Together with:] [NASA]. [SAGAN, Carl (1934-1996), et al.] Scientific Results of the Viking Project. Washington, D.C.: American Geophysical Union, [1977]. 4to. Illustrated. Publisher?s full rust cloth, front board and spine stamped in white (some rubbing, sunning to binding, text a bit toned, with foxing to edges of text block); publisher?s dust jacket (tape repairs to verso, lower edge of jacket chipped, jacket worn, soiled, scuffed, with tears). FIRST EDITION. Contributors include: Carl Sagan, Gerald A. Soffen, Ronald Greeley, Thomas E. Thorpe, and many more. An interesting group.